diff --git a/daxpay-channel/daxpay-channel-alipay/src/main/java/cn/daxpay/open/channel/alipay/service/pay/AlipayPayService.java b/daxpay-channel/daxpay-channel-alipay/src/main/java/cn/daxpay/open/channel/alipay/service/pay/AlipayPayService.java
index 7d3913506..b930ab55d 100644
--- a/daxpay-channel/daxpay-channel-alipay/src/main/java/cn/daxpay/open/channel/alipay/service/pay/AlipayPayService.java
+++ b/daxpay-channel/daxpay-channel-alipay/src/main/java/cn/daxpay/open/channel/alipay/service/pay/AlipayPayService.java
@@ -13,7 +13,6 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
-import java.math.BigDecimal;
 import java.time.OffsetDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.Map;
@@ -27,8 +26,6 @@ import java.util.Map;
 @RequiredArgsConstructor
 public class AlipayPayService {
 
-    private static final BigDecimal HUNDRED = new BigDecimal("100");
-
     private final AlipayChannelClient alipayChannelClient;
 
     /// 执行支付宝支付
@@ -43,7 +40,7 @@ public class AlipayPayService {
         req.setChannel("alipay");
         // 使用支付交易号作为商户订单号透传给支付宝, 回调时凭此反查 PayTrade
         req.setBizOrderNo(order.getTradeNo());
-        req.setAmount(payParam.getAmount().multiply(HUNDRED).longValue());
+        req.setAmount(payParam.getAmount());
         req.setSubject(payParam.getTitle());
         req.setDescription(payParam.getDescription());
         // 将平台支付方式(PayMethodEnum code)映射为支付宝通道识别码
diff --git a/daxpay-channel/daxpay-channel-douyin/src/main/java/cn/daxpay/open/channel/douyin/strategy/DouyinDirectPayStrategy.java b/daxpay-channel/daxpay-channel-douyin/src/main/java/cn/daxpay/open/channel/douyin/strategy/DouyinDirectPayStrategy.java
index f4b477686..0d4220db2 100644
--- a/daxpay-channel/daxpay-channel-douyin/src/main/java/cn/daxpay/open/channel/douyin/strategy/DouyinDirectPayStrategy.java
+++ b/daxpay-channel/daxpay-channel-douyin/src/main/java/cn/daxpay/open/channel/douyin/strategy/DouyinDirectPayStrategy.java
@@ -12,7 +12,6 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
-import java.math.BigDecimal;
 import java.util.Map;
 
 /// # 抖音支付直连支付策略
@@ -24,8 +23,6 @@ import java.util.Map;
 @RequiredArgsConstructor
 public class DouyinDirectPayStrategy extends AbsPayStrategy {
 
-    private static final BigDecimal HUNDRED = new BigDecimal("100");
-
     private final DouyinChannelClient douyinChannelClient;
 
     @Override
@@ -39,7 +36,7 @@ public class DouyinDirectPayStrategy extends AbsPayStrategy {
         DouyinPayReq req = new DouyinPayReq();
         req.setChannel(ProductEnum.DOUYIN_PAY.getChannel());
         req.setBizOrderNo(context.getPayParam().getBizOrderNo());
-        req.setAmount(context.getPayParam().getAmount().multiply(HUNDRED).longValue());
+        req.setAmount(context.getPayParam().getAmount());
         req.setSubject(context.getPayParam().getTitle());
         req.setMethod(context.getPayParam().getMethod());
         // TODO 从数据库获取抖音通道配置
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/common/util/PayUtil.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/common/util/PayUtil.java
index a3fb34ef9..7812a5093 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/common/util/PayUtil.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/common/util/PayUtil.java
@@ -25,7 +25,6 @@ import cn.daxpay.open.platform.core.code.CommonCode;
 ///
 @UtilityClass
 public class PayUtil {
-    private static final BigDecimal HUNDRED = new BigDecimal(100);
 
     /// 获取支付单的超时时间
     public OffsetDateTime getPaymentExpiredTime(Integer minute) {
@@ -38,25 +37,6 @@ public class PayUtil {
         return Math.toIntExact(duration.getSeconds() / 60);
     }
 
-    /// 元转分
-    ///
-    /// @param amount 元的金额
-    /// @return 分的金额
-    public int convertCentAmount(BigDecimal amount) {
-        return amount.multiply(HUNDRED)
-                .setScale(0, RoundingMode.HALF_UP)
-                .intValue();
-    }
-
-    /// 分转元,保留两位小数
-    ///
-    /// @param amount 元的金额
-    /// @return 元的金额 两位小数
-    public BigDecimal conversionAmount(int amount) {
-        return BigDecimal.valueOf(amount)
-                .divide(HUNDRED, 2, RoundingMode.HALF_UP);
-    }
-
     /// xx.xx%转换为基点表示费率(万分之多少)
     public String toBasisPointRate(BigDecimal rate) {
         return Opt.ofBlankAble(rate)
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/bo/sync/PaySyncResultBo.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/bo/sync/PaySyncResultBo.java
index dfddd4ea4..e07125caa 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/bo/sync/PaySyncResultBo.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/bo/sync/PaySyncResultBo.java
@@ -5,7 +5,6 @@ import cn.daxpay.open.platform.core.enums.pay.channel.PayProviderEnum;
 import lombok.Data;
 import lombok.experimental.Accessors;
 
-import java.math.BigDecimal;
 import java.time.OffsetDateTime;
 
 /// # 支付同步结果
@@ -23,11 +22,11 @@ public class PaySyncResultBo {
     /// 支付通道对应系统的交易号, 用与和本地记录关联起来
     private String outOrderNo;
 
-    /// 交易金额
-    private BigDecimal amount;
+    /// 交易金额（分，最小货币单位）
+    private Long amount;
 
-    /// 实收金额
-    private BigDecimal realAmount;
+    /// 实收金额（分，最小货币单位）
+    private Long realAmount;
 
     /// 支付完成时间
     private OffsetDateTime finishTime;
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/bo/trade/PayResultBo.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/bo/trade/PayResultBo.java
index 9a435aa88..59118dddc 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/bo/trade/PayResultBo.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/bo/trade/PayResultBo.java
@@ -4,7 +4,6 @@ import cn.daxpay.open.platform.core.enums.unipay.PayBodyTypeEnum;
 import lombok.Data;
 import lombok.experimental.Accessors;
 
-import java.math.BigDecimal;
 import java.time.OffsetDateTime;
 
 /// # 支付结果业务类
@@ -21,8 +20,8 @@ public class PayResultBo {
     /// 是否支付完成
     private boolean complete;
 
-    /// 实收金额
-    private BigDecimal realAmount;
+    /// 实收金额（分，最小货币单位）
+    private Long realAmount;
 
     /// 完成时间
     private OffsetDateTime finishTime;
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/controller/order/PayOrderController.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/controller/order/PayOrderController.java
index 1c712c6b7..18ad8e97c 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/controller/order/PayOrderController.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/controller/order/PayOrderController.java
@@ -23,8 +23,6 @@ import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
-import java.math.BigDecimal;
-
 /// # 支付订单控制器
 ///
 @Validated
@@ -70,7 +68,7 @@ public class PayOrderController {
 
     @Operation(summary = "查询金额汇总")
     @GetMapping("/get-total-amount")
-    public Result<BigDecimal> getTotalAmount(PayOrderQuery query){
+    public Result<Long> getTotalAmount(PayOrderQuery query){
         return Res.ok(queryService.getTotalAmount(query));
     }
 
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/order/pay/PayOrderManager.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/order/pay/PayOrderManager.java
index 619b6a4e6..6a7ee4643 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/order/pay/PayOrderManager.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/order/pay/PayOrderManager.java
@@ -17,7 +17,6 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Repository;
 
-import java.math.BigDecimal;
 import java.time.OffsetDateTime;
 import java.time.ZoneOffset;
 import java.util.List;
@@ -77,7 +76,7 @@ public class PayOrderManager extends BaseManager<PayOrderMapper, PayOrder> {
     }
 
     /// 查询汇总金额
-    public BigDecimal getTotalAmount(PayOrderQuery query){
+    public Long getTotalAmount(PayOrderQuery query){
         QueryWrapper<PayOrder> generator = QueryGenerator.generator(query);
         // 商户和应用AppId
         generator.eq(MpUtil.getColumnName(PayOrder::getStatus), PayStatusEnum.SUCCESS.getCode());
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/order/pay/PayOrderMapper.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/order/pay/PayOrderMapper.java
index 085631ab2..62527c530 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/order/pay/PayOrderMapper.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/order/pay/PayOrderMapper.java
@@ -8,12 +8,10 @@ import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
 import org.apache.ibatis.annotations.Select;
 
-import java.math.BigDecimal;
-
 
 @Mapper
 public interface PayOrderMapper extends MPJBaseMapper<PayOrder> {
 
-    @Select("select sum(amount) from pay_order ${ew.customSqlSegment}")
-    BigDecimal getTotalAmount(@Param(Constants.WRAPPER) QueryWrapper<PayOrder> param);
+    @Select("select sum(amount)::bigint from pay_order ${ew.customSqlSegment}")
+    Long getTotalAmount(@Param(Constants.WRAPPER) QueryWrapper<PayOrder> param);
 }
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/record/flow/TradeFlowRecordManager.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/record/flow/TradeFlowRecordManager.java
index 3d76f2c4e..6f96674ec 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/record/flow/TradeFlowRecordManager.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/record/flow/TradeFlowRecordManager.java
@@ -13,8 +13,6 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Repository;
 
-import java.math.BigDecimal;
-
 /// # 交易流水
 ///
 @Slf4j
@@ -30,7 +28,7 @@ public class TradeFlowRecordManager extends BaseManager<TradeFlowRecordMapper, T
     }
 
     /// 查询汇总金额
-    public BigDecimal getTotalAmount(TradeFlowRecordQuery query, TradeTypeEnum tradeTypeEnum){
+    public Long getTotalAmount(TradeFlowRecordQuery query, TradeTypeEnum tradeTypeEnum){
         QueryWrapper<TradeFlowRecord> generator = QueryGenerator.generator(query);
         generator.eq(MpUtil.getColumnName(TradeFlowRecord::getType), tradeTypeEnum.getCode());
         return baseMapper.getTotalAmount(generator);
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/record/flow/TradeFlowRecordMapper.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/record/flow/TradeFlowRecordMapper.java
index 8df9c0522..0d7718526 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/record/flow/TradeFlowRecordMapper.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/dao/record/flow/TradeFlowRecordMapper.java
@@ -8,13 +8,11 @@ import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
 import org.apache.ibatis.annotations.Select;
 
-import java.math.BigDecimal;
-
 /// # 交易流水
 ///
 @Mapper
 public interface TradeFlowRecordMapper extends MPJBaseMapper<TradeFlowRecord> {
 
-    @Select("select sum(amount) from pay_trade_flow_record ${ew.customSqlSegment}")
-    BigDecimal getTotalAmount(@Param(Constants.WRAPPER) QueryWrapper<TradeFlowRecord> generator);
+    @Select("select sum(amount)::bigint from pay_trade_flow_record ${ew.customSqlSegment}")
+    Long getTotalAmount(@Param(Constants.WRAPPER) QueryWrapper<TradeFlowRecord> generator);
 }
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/entity/order/pay/PayOrder.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/entity/order/pay/PayOrder.java
index 5582741fd..c9a54cc38 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/entity/order/pay/PayOrder.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/entity/order/pay/PayOrder.java
@@ -17,7 +17,6 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.experimental.Accessors;
 
-import java.math.BigDecimal;
 import java.time.OffsetDateTime;
 
 /// # 支付订单
@@ -75,11 +74,11 @@ public class PayOrder extends MchBaseEntity implements ToResult<PayOrderVo> {
     /// @see PayLimitPayEnum
     private String limitPay;
 
-    /// 金额(元)
-    private BigDecimal amount;
+    /// 金额（分，最小货币单位）
+    private Long amount;
 
-    /// 可退金额(元)
-    private BigDecimal refundableBalance;
+    /// 可退金额（分，最小货币单位）
+    private Long refundableBalance;
 
     /// 支付状态
     /// @see PayStatusEnum
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/entity/order/pay/PayOrderExpand.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/entity/order/pay/PayOrderExpand.java
index 67b0fe7c7..3be5b3283 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/entity/order/pay/PayOrderExpand.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/entity/order/pay/PayOrderExpand.java
@@ -12,7 +12,6 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.experimental.Accessors;
 
-import java.math.BigDecimal;
 import java.time.OffsetDateTime;
 
 /// # 支付订单扩展存储参数
@@ -42,8 +41,8 @@ public class PayOrderExpand extends MchBaseEntity implements ToResult<PayOrderEx
     /// 请求时间
     private OffsetDateTime reqTime;
 
-    /// 实收金额
-    private BigDecimal realAmount;
+    /// 实收金额（分，最小货币单位）
+    private Long realAmount;
 
     /// 终端设备编码
     private String terminalNo;
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/entity/record/flow/TradeFlowRecord.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/entity/record/flow/TradeFlowRecord.java
index 133229a1e..5d41572e6 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/entity/record/flow/TradeFlowRecord.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/entity/record/flow/TradeFlowRecord.java
@@ -15,8 +15,6 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.experimental.Accessors;
 
-import java.math.BigDecimal;
-
 /// # 交易流水记录
 ///
 @EqualsAndHashCode(callSuper = true)
@@ -32,8 +30,8 @@ public class TradeFlowRecord extends MchBaseEntity implements ToResult<TradeFlow
     /// 订单标题
     private String title;
 
-    /// 金额
-    private BigDecimal amount;
+    /// 金额（分，最小货币单位）
+    private Long amount;
 
     /// 业务类型
     /// @see TradeTypeEnum
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/order/pay/PayOrderExpandResult.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/order/pay/PayOrderExpandResult.java
index 5476ddddf..438a632bb 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/order/pay/PayOrderExpandResult.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/order/pay/PayOrderExpandResult.java
@@ -6,7 +6,6 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.experimental.Accessors;
 
-import java.math.BigDecimal;
 import java.time.OffsetDateTime;
 
 /// # 支付订单扩展信息
@@ -32,8 +31,8 @@ public class PayOrderExpandResult extends BaseResult {
     @Schema(description = "请求时间(UTC)")
     private OffsetDateTime reqTime;
 
-    @Schema(description = "实收金额")
-    private BigDecimal realAmount;
+    @Schema(description = "实收金额(分)")
+    private Long realAmount;
 
     @Schema(description = "终端设备编码")
     private String terminalNo;
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/order/pay/PayOrderVo.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/order/pay/PayOrderVo.java
index fe34f5cd2..9542a6fd7 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/order/pay/PayOrderVo.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/order/pay/PayOrderVo.java
@@ -11,7 +11,6 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.experimental.Accessors;
 
-import java.math.BigDecimal;
 import java.time.OffsetDateTime;
 
 /// # 支付订单
@@ -64,17 +63,17 @@ public class PayOrderVo extends MchTradeBaseResult {
     @Schema(description = "限制用户支付类型")
     private String limitPay;
 
-    /// 金额
-    @Schema(description = "金额")
-    private BigDecimal amount;
+    /// 金额（分，最小货币单位）
+    @Schema(description = "金额(分)")
+    private Long amount;
 
-    /// 实收金额
-    @Schema(description = "实收金额")
-    private BigDecimal realAmount;
+    /// 实收金额（分，最小货币单位）
+    @Schema(description = "实收金额(分)")
+    private Long realAmount;
 
-    /// 可退款余额
-    @Schema(description = "可退款余额")
-    private BigDecimal refundableBalance;
+    /// 可退款余额（分，最小货币单位）
+    @Schema(description = "可退款余额(分)")
+    private Long refundableBalance;
 
     /// 支付状态
     /// @see PayStatusEnum
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/record/flow/TradeFlowAmountResult.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/record/flow/TradeFlowAmountResult.java
index 4dfc04de8..62d09a706 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/record/flow/TradeFlowAmountResult.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/record/flow/TradeFlowAmountResult.java
@@ -4,18 +4,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 import lombok.experimental.Accessors;
 
-import java.math.BigDecimal;
-
 /// # 各类型流水汇总金额
 ///
 @Data
 @Accessors(chain = true)
 @Schema(title = "各类型流水汇总金额")
 public class TradeFlowAmountResult {
-    @Schema(description = "收入金额")
-    private BigDecimal incomeAmount;
-    @Schema(description = "退款金额")
-    private BigDecimal refundAmount;
-    @Schema(description = "转账金额")
-    private BigDecimal transferAmount;
+    @Schema(description = "收入金额(分)")
+    private Long incomeAmount;
+    @Schema(description = "退款金额(分)")
+    private Long refundAmount;
+    @Schema(description = "转账金额(分)")
+    private Long transferAmount;
 }
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/record/flow/TradeFlowRecordResult.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/record/flow/TradeFlowRecordResult.java
index 2fffc15ec..c11e7312c 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/record/flow/TradeFlowRecordResult.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/result/record/flow/TradeFlowRecordResult.java
@@ -8,8 +8,6 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.experimental.Accessors;
 
-import java.math.BigDecimal;
-
 /// # 资金流水记录
 ///
 @EqualsAndHashCode(callSuper = true)
@@ -21,8 +19,8 @@ public class TradeFlowRecordResult extends MchTradeBaseResult {
     /// 订单标题
     private String title;
 
-    /// 金额
-    private BigDecimal amount;
+    /// 金额（分，最小货币单位）
+    private Long amount;
 
     /// 业务类型
     /// @see TradeFlowTypeEnum
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/order/pay/PayOrderQueryService.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/order/pay/PayOrderQueryService.java
index 3d5f52661..691426828 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/order/pay/PayOrderQueryService.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/order/pay/PayOrderQueryService.java
@@ -27,7 +27,6 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
-import java.math.BigDecimal;
 import java.util.Objects;
 import java.util.Optional;
 
@@ -118,7 +117,7 @@ public class PayOrderQueryService {
     }
 
     /// 查询支付总金额
-    public BigDecimal getTotalAmount(PayOrderQuery param) {
+    public Long getTotalAmount(PayOrderQuery param) {
         return payOrderManager.getTotalAmount(param);
     }
 
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/TradeUniHandleService.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/TradeUniHandleService.java
index a40febfa9..b875ff3f9 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/TradeUniHandleService.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/TradeUniHandleService.java
@@ -1,7 +1,6 @@
 package cn.daxpay.open.payment.old.pay.service.trade;
 
 import cn.daxpay.open.platform.core.annotation.IgnoreTenant;
-import cn.daxpay.open.platform.core.util.BigDecimalUtil;
 import cn.daxpay.open.payment.old.pay.dao.order.pay.PayOrderExpandManager;
 import cn.daxpay.open.payment.old.pay.dao.order.pay.PayOrderManager;
 import cn.daxpay.open.payment.old.pay.entity.order.pay.PayOrder;
@@ -14,7 +13,6 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
-import java.math.BigDecimal;
 import java.time.OffsetDateTime;
 import java.time.ZoneOffset;
 import java.util.Objects;
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/pay/PayAssistService.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/pay/PayAssistService.java
index 575edf141..f40c915d3 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/pay/PayAssistService.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/pay/PayAssistService.java
@@ -3,7 +3,6 @@ package cn.daxpay.open.payment.old.pay.service.trade.pay;
 import cn.daxpay.open.platform.core.exception.ValidationFailedException;
 import cn.daxpay.open.platform.core.exception.BizInfoException;
 import cn.daxpay.open.platform.core.code.CommonErrorCode;
-import cn.daxpay.open.platform.core.util.BigDecimalUtil;
 import cn.daxpay.open.platform.core.util.DateTimeUtil;
 import cn.daxpay.open.platform.core.code.DaxPayErrorCode;
 import cn.daxpay.open.platform.core.exception.business.AmountExceedLimitException;
@@ -31,7 +30,6 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
-import java.math.BigDecimal;
 import java.time.OffsetDateTime;
 import java.time.ZoneOffset;
 import java.util.List;
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/pay/PayService.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/pay/PayService.java
index b9ccbf1f2..16b1b2b45 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/pay/PayService.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/pay/PayService.java
@@ -109,7 +109,7 @@ public class PayService {
         trade.setProduct(payOrder.getProduct());
         trade.setChannel(payOrder.getChannel());
         trade.setMethod(payOrder.getMethod());
-        trade.setAmount(payOrder.getAmount().multiply(java.math.BigDecimal.valueOf(100)).longValue());
+        trade.setAmount(payOrder.getAmount());
         context.setTrade(trade);
         PayResultBo result;
         try {
@@ -118,7 +118,7 @@ public class PayService {
             result = new PayResultBo();
             result.setOutOrderNo(newResult.getOutOrderNo());
             result.setComplete(newResult.isComplete());
-            result.setRealAmount(newResult.getRealAmount() != null ? java.math.BigDecimal.valueOf(newResult.getRealAmount(), 2) : null);
+            result.setRealAmount(newResult.getRealAmount());
             result.setFinishTime(newResult.getFinishTime());
             result.setPayBody(newResult.getPayBody());
             result.setPayBodyType(newResult.getPayBodyType());
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/pay/PaySyncService.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/pay/PaySyncService.java
index c948869cb..2dd73bfd4 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/pay/PaySyncService.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/old/pay/service/trade/pay/PaySyncService.java
@@ -39,7 +39,6 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Propagation;
 import org.springframework.transaction.annotation.Transactional;
 
-import java.math.BigDecimal;
 import java.time.OffsetDateTime;
 import java.time.ZoneOffset;
 import java.util.Objects;
@@ -102,7 +101,7 @@ public class PaySyncService {
         trade.setProduct(payOrder.getProduct());
         trade.setChannel(payOrder.getChannel());
         trade.setMethod(payOrder.getMethod());
-        trade.setAmount(payOrder.getAmount().multiply(BigDecimal.valueOf(100)).longValue());
+        trade.setAmount(payOrder.getAmount());
         try {
             // 执行操作, 获取支付网关同步的结果
             var newResult = syncPayStrategy.doSync(trade);
@@ -118,8 +117,8 @@ public class PaySyncService {
                 });
             }
             syncResult.setOutOrderNo(newResult.getOutOrderNo());
-            syncResult.setAmount(newResult.getAmount() != null ? BigDecimal.valueOf(newResult.getAmount(), 2) : null);
-            syncResult.setRealAmount(newResult.getRealAmount() != null ? BigDecimal.valueOf(newResult.getRealAmount(), 2) : null);
+            syncResult.setAmount(newResult.getAmount());
+            syncResult.setRealAmount(newResult.getRealAmount());
             syncResult.setFinishTime(newResult.getFinishTime());
             syncResult.setSyncData(newResult.getSyncData());
             syncResult.setSyncErrorCode(newResult.getSyncErrorCode());
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/pay/service/PayAssistService.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/pay/service/PayAssistService.java
index 4b507e55b..c4bee65b5 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/pay/service/PayAssistService.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/pay/service/PayAssistService.java
@@ -54,7 +54,7 @@ public class PayAssistService {
     public PayTrade createOrder(PayParam payParam) {
         String appId = payParam.getAppId();
         OffsetDateTime expiredTime = this.getExpiredTime(payParam.getExpiredTime());
-        Long amount = Long.valueOf(PayUtil.convertCentAmount(payParam.getAmount()));
+        Long amount = payParam.getAmount();
         // 从产品编码派生通道编码
         String channel = payParam.getProduct();
         if (StrUtil.isNotBlank(channel)) {
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/param/trade/pay/GoodsDetail.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/param/trade/pay/GoodsDetail.java
index 6b35ada0d..0c25dc685 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/param/trade/pay/GoodsDetail.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/param/trade/pay/GoodsDetail.java
@@ -1,16 +1,13 @@
 package cn.daxpay.open.payment.unipay.param.trade.pay;
 
 import io.swagger.v3.oas.annotations.media.Schema;
-import jakarta.validation.constraints.DecimalMin;
-import jakarta.validation.constraints.Digits;
+import jakarta.validation.constraints.Max;
 import jakarta.validation.constraints.Min;
 import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.NotNull;
 import jakarta.validation.constraints.Size;
 import lombok.Data;
 
-import java.math.BigDecimal;
-
 /// # 订单商品明细
 ///
 /// 对应支付宝 goods_detail 和微信支付 detail.goods_detail，
@@ -38,13 +35,13 @@ public class GoodsDetail {
     @Schema(description = "商品数量")
     private Integer quantity;
 
-    /// 商品单价（分）
+    /// 商品单价（分，最小货币单位）
     /// Alipay 需转为元，WeChat 直接使用分
     @NotNull(message = "{validation.field.unitPrice.notNull}")
-    @DecimalMin(value = "0.01", message = "{validation.field.unitPrice.decimalMin}")
-    @Digits(integer = 10, fraction = 2, message = "{validation.field.unitPrice.digits}")
+    @Min(value = 1, message = "{validation.field.unitPrice.min}")
+    @Max(value = 9999999999L, message = "{validation.field.unitPrice.max}")
     @Schema(description = "商品单价(分)")
-    private BigDecimal unitPrice;
+    private Long unitPrice;
 
     /// 商品分类（Alipay 独有，选填）
     @Size(max = 32, message = "{validation.field.goodsCategory.size}")
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/param/trade/pay/PayParam.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/param/trade/pay/PayParam.java
index ae16331ad..661f769b8 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/param/trade/pay/PayParam.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/param/trade/pay/PayParam.java
@@ -11,7 +11,6 @@ import jakarta.validation.constraints.*;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 
-import java.math.BigDecimal;
 import java.time.OffsetDateTime;
 import java.util.List;
 
@@ -41,12 +40,12 @@ public class PayParam extends MerchantPaymentCommonParam {
     @Size(max = 50, message = "{validation.field.description.size}")
     private String description;
 
-    /// 支付金额（元）
-    @Schema(description = "支付金额")
+    /// 支付金额（分，最小货币单位）
+    @Schema(description = "支付金额(分)")
     @NotNull(message = "{validation.field.amount.notNull}")
-    @DecimalMin(value = "0.01", message = "{validation.field.amount.decimalMin}")
-    @Digits(integer = 8, fraction = 2, message = "{validation.field.amount.digits}")
-    private BigDecimal amount;
+    @Min(value = 1, message = "{validation.field.amount.min}")
+    @Max(value = 9999999999L, message = "{validation.field.amount.max}")
+    private Long amount;
 
     // ===== 支付路由 =====
 
diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/result/trade/pay/PayOrderResult.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/result/trade/pay/PayOrderResult.java
index 738f8ef45..578ac9f5a 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/result/trade/pay/PayOrderResult.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/result/trade/pay/PayOrderResult.java
@@ -9,7 +9,6 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 import lombok.experimental.Accessors;
 
-import java.math.BigDecimal;
 import java.time.OffsetDateTime;
 
 /// # 支付订单
@@ -57,17 +56,17 @@ public class PayOrderResult {
     @Schema(description = "限制用户支付类型")
     private String limitPay;
 
-    /// 金额
-    @Schema(description = "金额")
-    private BigDecimal amount;
+    /// 金额（分，最小货币单位）
+    @Schema(description = "金额(分)")
+    private Long amount;
 
-    /// 实收金额
-    @Schema(description = "实收金额")
-    private BigDecimal realAmount;
+    /// 实收金额（分，最小货币单位）
+    @Schema(description = "实收金额(分)")
+    private Long realAmount;
 
-    /// 可退款余额
-    @Schema(description = "可退款余额")
-    private BigDecimal refundableBalance;
+    /// 可退款余额（分，最小货币单位）
+    @Schema(description = "可退款余额(分)")
+    private Long refundableBalance;
 
     /// 支付状态
     /// @see PayStatusEnum
diff --git a/daxpay-payment/daxpay-payment-merchant/src/main/java/cn/daxpay/open/payment/merchant/param/miniapp/quickly/QuicklyBarPayParam.java b/daxpay-payment/daxpay-payment-merchant/src/main/java/cn/daxpay/open/payment/merchant/param/miniapp/quickly/QuicklyBarPayParam.java
index a5980df73..0e8c770c6 100644
--- a/daxpay-payment/daxpay-payment-merchant/src/main/java/cn/daxpay/open/payment/merchant/param/miniapp/quickly/QuicklyBarPayParam.java
+++ b/daxpay-payment/daxpay-payment-merchant/src/main/java/cn/daxpay/open/payment/merchant/param/miniapp/quickly/QuicklyBarPayParam.java
@@ -5,8 +5,6 @@ import jakarta.validation.constraints.*;
 import lombok.Data;
 import lombok.experimental.Accessors;
 
-import java.math.BigDecimal;
-
 /// # 小程序快捷被扫支付参数
 ///
 @Data
@@ -15,10 +13,10 @@ import java.math.BigDecimal;
 public class QuicklyBarPayParam {
 
     @NotNull(message = "{validation.field.amount.notNull}")
-    @DecimalMin(value = "0.01", message = "{validation.field.amount.decimalMin}")
-    @Digits(integer = 8, fraction = 2, message = "{validation.field.amount.digits}")
-    @Schema(description = "支付金额")
-    private BigDecimal amount;
+    @Min(value = 1, message = "{validation.field.amount.min}")
+    @Max(value = 9999999999L, message = "{validation.field.amount.max}")
+    @Schema(description = "支付金额(分)")
+    private Long amount;
 
     /// 支付描述
     @Schema(description = "支付描述")
diff --git a/daxpay-payment/daxpay-payment-merchant/src/main/java/cn/daxpay/open/payment/merchant/param/miniapp/quickly/QuicklyQrPayParam.java b/daxpay-payment/daxpay-payment-merchant/src/main/java/cn/daxpay/open/payment/merchant/param/miniapp/quickly/QuicklyQrPayParam.java
index cb2ee64b7..4641f288c 100644
--- a/daxpay-payment/daxpay-payment-merchant/src/main/java/cn/daxpay/open/payment/merchant/param/miniapp/quickly/QuicklyQrPayParam.java
+++ b/daxpay-payment/daxpay-payment-merchant/src/main/java/cn/daxpay/open/payment/merchant/param/miniapp/quickly/QuicklyQrPayParam.java
@@ -5,8 +5,6 @@ import jakarta.validation.constraints.*;
 import lombok.Data;
 import lombok.experimental.Accessors;
 
-import java.math.BigDecimal;
-
 /// # 小程序快捷二维码支付参数
 ///
 @Data
@@ -15,10 +13,10 @@ import java.math.BigDecimal;
 public class QuicklyQrPayParam {
 
     @NotNull(message = "{validation.field.amount.notNull}")
-    @DecimalMin(value = "0.01", message = "{validation.field.amount.decimalMin}")
-    @Digits(integer = 8, fraction = 2, message = "{validation.field.amount.digits}")
-    @Schema(description = "支付金额")
-    private BigDecimal amount;
+    @Min(value = 1, message = "{validation.field.amount.min}")
+    @Max(value = 9999999999L, message = "{validation.field.amount.max}")
+    @Schema(description = "支付金额(分)")
+    private Long amount;
 
     /// 支付描述
     @Schema(description = "支付描述")
diff --git a/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/en-US/validation.json b/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/en-US/validation.json
index c94964157..7ad5c5496 100644
--- a/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/en-US/validation.json
+++ b/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/en-US/validation.json
@@ -141,9 +141,9 @@
       "size": "Payment order no. cannot exceed 100 characters"
     },
     "amount": {
-      "notNull": "Refund amount cannot be blank",
-      "decimalMin": "Payment amount cannot be less than 0.01",
-      "digits": "Payment amount must be accurate to cents and less than 100 million"
+      "notNull": "Payment amount cannot be blank",
+      "min": "Payment amount cannot be less than 1 cent",
+      "max": "Payment amount cannot exceed 100 million yuan"
     },
     "title": {
       "notBlank": "Title cannot be blank",
@@ -225,8 +225,8 @@
     },
     "unitPrice": {
       "notNull": "Unit price cannot be null",
-      "decimalMin": "Unit price cannot be less than 0.01",
-      "digits": "Unit price precision up to cents"
+      "min": "Unit price cannot be less than 1 cent",
+      "max": "Unit price cannot exceed 100 million yuan"
     },
     "goodsCategory": {
       "size": "Goods category cannot exceed 32 characters"
diff --git a/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/zh-CN/validation.json b/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/zh-CN/validation.json
index a30de0f7f..7d7e7ee87 100644
--- a/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/zh-CN/validation.json
+++ b/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/zh-CN/validation.json
@@ -141,9 +141,9 @@
       "size": "支付订单号不可超过100位"
     },
     "amount": {
-      "notNull": "退款金额不可为空",
-      "decimalMin": "支付金额不可小于0.01元",
-      "digits": "支付金额精度到分, 且要小于一亿元"
+      "notNull": "支付金额不可为空",
+      "min": "支付金额不能小于1分",
+      "max": "支付金额不能大于一亿元"
     },
     "title": {
       "notBlank": "名称不可为空",
@@ -225,8 +225,8 @@
     },
     "unitPrice": {
       "notNull": "商品单价不可为空",
-      "decimalMin": "商品单价不可小于0.01元",
-      "digits": "商品单价精度到分"
+      "min": "商品单价不能小于1分",
+      "max": "商品单价不能大于一亿元"
     },
     "goodsCategory": {
       "size": "商品分类不可超过32位"