diff --git a/daxpay-channel/daxpay-channel-adapay/src/main/java/cn/daxpay/open/channel/adapay/client/req/AdapayCallbackParseReq.java b/daxpay-channel/daxpay-channel-adapay/src/main/java/cn/daxpay/open/channel/adapay/client/req/AdapayCallbackParseReq.java
index c3285433a..95bcbb284 100644
--- a/daxpay-channel/daxpay-channel-adapay/src/main/java/cn/daxpay/open/channel/adapay/client/req/AdapayCallbackParseReq.java
+++ b/daxpay-channel/daxpay-channel-adapay/src/main/java/cn/daxpay/open/channel/adapay/client/req/AdapayCallbackParseReq.java
@@ -6,13 +6,20 @@ import lombok.Data;
 /// # Adapay 回调验签解析请求(主应用 → 子应用)
 ///
 /// 与子应用 dax-pay-channel-two 的 `AdapayCallbackParseReq` 镜像。
-/// 主应用组装凭证(publicKey 为空时子应用用全局平台公钥) + 原始 body 下发, 子应用验签并解析。
+/// 主应用从异步通知 HTTP 请求中提取表单参数 data + sign, 连同通道凭证下发, 子应用验签并解析。
+///
+/// Adapay 异步通知为 application/x-www-form-urlencoded 表单格式, 含两个字段:
+/// - data: 业务数据 JSON 明文(待验签内容)
+/// - sign: data 的 SHA1withRSA 签名(Base64)
 @Data
 public class AdapayCallbackParseReq {
 
     /// 通道调用凭证(用于获取平台公钥验签, publicKey 为空时子应用用默认公钥)
     private AdapaySdkCredential credential;
 
-    /// 回调原始 body(Adapay 异步通知 JSON: {data, signature})
-    private String body;
+    /// 回调业务数据 JSON 明文(表单参数 data, 待验签内容)
+    private String data;
+
+    /// 回调签名(表单参数 sign, 对 data 的 SHA1withRSA Base64 签名)
+    private String sign;
 }
diff --git a/daxpay-channel/daxpay-channel-adapay/src/main/java/cn/daxpay/open/channel/adapay/service/callback/AdapayPayCallbackService.java b/daxpay-channel/daxpay-channel-adapay/src/main/java/cn/daxpay/open/channel/adapay/service/callback/AdapayPayCallbackService.java
index d3d4962e3..edf3e02a2 100644
--- a/daxpay-channel/daxpay-channel-adapay/src/main/java/cn/daxpay/open/channel/adapay/service/callback/AdapayPayCallbackService.java
+++ b/daxpay-channel/daxpay-channel-adapay/src/main/java/cn/daxpay/open/channel/adapay/service/callback/AdapayPayCallbackService.java
@@ -10,7 +10,6 @@ import cn.daxpay.open.payment.trade.record.service.PayCallbackRecordService;
 import cn.daxpay.open.payment.trade.runtime.service.callback.PayCallbackService;
 import cn.daxpay.open.platform.core.enums.pay.notice.CallbackStatusEnum;
 import cn.hutool.core.util.StrUtil;
-import cn.hutool.extra.servlet.JakartaServletUtil;
 import jakarta.servlet.http.HttpServletRequest;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -38,22 +37,24 @@ public class AdapayPayCallbackService {
 
     /// 支付回调处理
     public String payHandle(String channelMchNo, HttpServletRequest request) {
-        // 1. 提取回调原始 body
-        String body = JakartaServletUtil.getBody(request);
+        // 1. 提取回调表单参数(Adapay 异步通知为 application/x-www-form-urlencoded, 含 data + sign)
+        String data = request.getParameter("data");
+        String sign = request.getParameter("sign");
         Map<String, Object> notify = new HashMap<>();
-        notify.put("body", body);
-        if (StrUtil.isBlank(body)) {
-            log.error("Adapay 支付回调: body 为空");
+        notify.put("data", data);
+        notify.put("sign", sign);
+        if (StrUtil.isBlank(data) || StrUtil.isBlank(sign)) {
+            log.error("Adapay 支付回调: data 或 sign 为空");
             CallbackData failData = new CallbackData();
             failData.setCallbackData(notify);
             failData.setCallbackStatus(CallbackStatusEnum.FAIL);
-            failData.setCallbackErrorMsg("Adapay 支付回调: body 为空");
+            failData.setCallbackErrorMsg("Adapay 支付回调: data 或 sign 为空");
             payCallbackRecordService.savePay(channelMchNo, failData);
             return AdapayCode.NOTIFY_FAIL;
         }
 
         // 2. 转发子应用验签解析(publicKey 为空, 子应用用全局默认平台公钥)
-        AdapayCallbackParseResp resp = parse(body, false);
+        AdapayCallbackParseResp resp = parse(data, sign, false);
         if (resp == null || !Boolean.TRUE.equals(resp.getSuccess())) {
             log.error("Adapay 支付回调验签失败");
             CallbackData failData = new CallbackData();
@@ -93,11 +94,12 @@ public class AdapayPayCallbackService {
     }
 
     /// 转发子应用验签解析
-    private AdapayCallbackParseResp parse(String body, boolean refund) {
+    private AdapayCallbackParseResp parse(String data, String sign, boolean refund) {
         AdapaySdkCredential credential = new AdapaySdkCredential();
         AdapayCallbackParseReq req = new AdapayCallbackParseReq();
         req.setCredential(credential);
-        req.setBody(body);
+        req.setData(data);
+        req.setSign(sign);
         var result = refund
                 ? adapayChannelClient.parseRefundCallback(req)
                 : adapayChannelClient.parsePayCallback(req);
diff --git a/daxpay-channel/daxpay-channel-adapay/src/main/java/cn/daxpay/open/channel/adapay/service/callback/AdapayRefundCallbackService.java b/daxpay-channel/daxpay-channel-adapay/src/main/java/cn/daxpay/open/channel/adapay/service/callback/AdapayRefundCallbackService.java
index 2ca7ca7ed..9cc164bef 100644
--- a/daxpay-channel/daxpay-channel-adapay/src/main/java/cn/daxpay/open/channel/adapay/service/callback/AdapayRefundCallbackService.java
+++ b/daxpay-channel/daxpay-channel-adapay/src/main/java/cn/daxpay/open/channel/adapay/service/callback/AdapayRefundCallbackService.java
@@ -10,7 +10,6 @@ import cn.daxpay.open.payment.trade.record.service.PayCallbackRecordService;
 import cn.daxpay.open.payment.trade.runtime.service.callback.RefundCallbackService;
 import cn.daxpay.open.platform.core.enums.pay.notice.CallbackStatusEnum;
 import cn.hutool.core.util.StrUtil;
-import cn.hutool.extra.servlet.JakartaServletUtil;
 import jakarta.servlet.http.HttpServletRequest;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -22,7 +21,7 @@ import java.util.Objects;
 
 /// # Adapay 退款回调处理服务
 ///
-/// Adapay 退款异步通知 → 主应用接收原始 body → 转发子应用验签与解析 →
+/// Adapay 退款异步通知(表单参数 data + sign) → 主应用提取表单参数 → 转发子应用验签与解析 →
 /// 构建 [RefundCallbackData] 交由 [RefundCallbackService] 更新退款单状态。
 ///
 /// 验签只需全局平台公钥(子应用内置默认), 主应用零加密代码。
@@ -37,15 +36,18 @@ public class AdapayRefundCallbackService {
 
     /// 退款回调处理
     public String refundHandle(String channelMchNo, HttpServletRequest request) {
-        String body = JakartaServletUtil.getBody(request);
+        // 提取回调表单参数(Adapay 异步通知为 application/x-www-form-urlencoded, 含 data + sign)
+        String data = request.getParameter("data");
+        String sign = request.getParameter("sign");
         Map<String, Object> notify = new HashMap<>();
-        notify.put("body", body);
-        if (StrUtil.isBlank(body)) {
-            log.error("Adapay 退款回调: body 为空");
+        notify.put("data", data);
+        notify.put("sign", sign);
+        if (StrUtil.isBlank(data) || StrUtil.isBlank(sign)) {
+            log.error("Adapay 退款回调: data 或 sign 为空");
             RefundCallbackData failData = new RefundCallbackData();
             failData.setCallbackData(notify);
             failData.setCallbackStatus(CallbackStatusEnum.FAIL);
-            failData.setCallbackErrorMsg("Adapay 退款回调: body 为空");
+            failData.setCallbackErrorMsg("Adapay 退款回调: data 或 sign 为空");
             payCallbackRecordService.saveRefund(channelMchNo, failData);
             return AdapayCode.NOTIFY_FAIL;
         }
@@ -54,7 +56,8 @@ public class AdapayRefundCallbackService {
         AdapaySdkCredential credential = new AdapaySdkCredential();
         AdapayCallbackParseReq req = new AdapayCallbackParseReq();
         req.setCredential(credential);
-        req.setBody(body);
+        req.setData(data);
+        req.setSign(sign);
         var result = adapayChannelClient.parseRefundCallback(req);
         if (result.getCode() != 0) {
             log.error("Adapay 退款回调: 子应用解析失败: {}", result.getMsg());