diff --git a/_doc/Task.md b/_doc/Task.md
index ba217c0e5..123924831 100644
--- a/_doc/Task.md
+++ b/_doc/Task.md
@@ -1,4 +1,4 @@
-## 单商户
+# 单商户
 ## 3.0.0: 功能完善第一阶段
 - 优化:
     - [x] 增加延时队列的可视页面
@@ -6,8 +6,13 @@
     - [x] 转账接收方类型优化
     - [x] 支付/退款/转账商户订单号查询时根据AppId做隔离
     - [x] 支付通道支持启停用功能
-    - [ ] 支付订单超时时间不得早于当前时间
+    - [x] 支付订单超时时间不得早于当前时间
 - [ ] 云闪付支付通道对接
+  - [x] 支付
+  - [x] 回调
+  - [x] 退款
+  - [x] 同步
+  - [ ] 对账
 - [ ] 分账功能
     - [x] 分账接收方配置
     - [x] 分账组管理
diff --git a/daxpay-single-channel/daxpay-single-union/src/main/java/org/dromara/daxpay/channel/union/service/reconcile/UnionReconcileService.java b/daxpay-single-channel/daxpay-single-union/src/main/java/org/dromara/daxpay/channel/union/service/reconcile/UnionReconcileService.java
index bff4eaba8..78c641d47 100644
--- a/daxpay-single-channel/daxpay-single-union/src/main/java/org/dromara/daxpay/channel/union/service/reconcile/UnionReconcileService.java
+++ b/daxpay-single-channel/daxpay-single-union/src/main/java/org/dromara/daxpay/channel/union/service/reconcile/UnionReconcileService.java
@@ -35,6 +35,7 @@ import java.util.stream.Collectors;
 
 /**
  * 云闪付对账
+ * TODO 目前默认账单除了 S30外都是支付成功状态, 后期需要根据账单类型进行完善
  * @author xxm
  * @since 2024/3/7
  */
diff --git a/daxpay-single/daxpay-single-service/src/main/java/org/dromara/daxpay/service/service/trade/pay/PayAssistService.java b/daxpay-single/daxpay-single-service/src/main/java/org/dromara/daxpay/service/service/trade/pay/PayAssistService.java
index 45376bcc7..98cf8305a 100644
--- a/daxpay-single/daxpay-single-service/src/main/java/org/dromara/daxpay/service/service/trade/pay/PayAssistService.java
+++ b/daxpay-single/daxpay-single-service/src/main/java/org/dromara/daxpay/service/service/trade/pay/PayAssistService.java
@@ -1,8 +1,13 @@
 package org.dromara.daxpay.service.service.trade.pay;
 
-import cn.bootx.platform.starter.redis.delay.service.DelayJobService;
+import cn.bootx.platform.core.exception.ValidationFailedException;
 import cn.bootx.platform.core.util.BigDecimalUtil;
 import cn.bootx.platform.core.util.DateTimeUtil;
+import cn.bootx.platform.starter.redis.delay.service.DelayJobService;
+import cn.hutool.core.bean.BeanUtil;
+import cn.hutool.core.util.StrUtil;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.dromara.daxpay.core.enums.PayAllocStatusEnum;
 import org.dromara.daxpay.core.enums.PayRefundStatusEnum;
 import org.dromara.daxpay.core.enums.PayStatusEnum;
@@ -19,10 +24,6 @@ import org.dromara.daxpay.service.common.local.PaymentContextLocal;
 import org.dromara.daxpay.service.dao.order.pay.PayOrderManager;
 import org.dromara.daxpay.service.entity.order.pay.PayOrder;
 import org.dromara.daxpay.service.service.order.pay.PayOrderQueryService;
-import cn.hutool.core.bean.BeanUtil;
-import cn.hutool.core.util.StrUtil;
-import lombok.RequiredArgsConstructor;
-import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -176,4 +177,14 @@ public class PayAssistService {
         // 根据商户应用配置计算出时间
         return PayUtil.getPaymentExpiredTime(mchAppLocal.getOrderTimeout());
     }
+
+    /**
+     * 校验订单超时时间是否正常
+     */
+    public void validationExpiredTime(PayParam payParam) {
+        LocalDateTime expiredTime = this.getExpiredTime(payParam);
+        if (Objects.nonNull(expiredTime) && DateTimeUtil.lt(LocalDateTime.now(), expiredTime)) {
+            throw new ValidationFailedException("支付超时时间设置有误, 请检查!");
+        }
+    }
 }
diff --git a/daxpay-single/daxpay-single-service/src/main/java/org/dromara/daxpay/service/service/trade/pay/PayService.java b/daxpay-single/daxpay-single-service/src/main/java/org/dromara/daxpay/service/service/trade/pay/PayService.java
index 9a94b659f..45d71049f 100644
--- a/daxpay-single/daxpay-single-service/src/main/java/org/dromara/daxpay/service/service/trade/pay/PayService.java
+++ b/daxpay-single/daxpay-single-service/src/main/java/org/dromara/daxpay/service/service/trade/pay/PayService.java
@@ -45,6 +45,8 @@ public class PayService {
     public PayResult pay(PayParam payParam){
         // 校验支付限额
         payAssistService.validationLimitAmount(payParam);
+        // 校验超时时间, 不可早于当前
+        payAssistService.validationExpiredTime(payParam);
         // 获取商户订单号
         String bizOrderNo = payParam.getBizOrderNo();
         // 加锁