diff --git a/video-gen-api/app/api/v1/payments.py b/video-gen-api/app/api/v1/payments.py
index 821935bb..44e78681 100644
--- a/video-gen-api/app/api/v1/payments.py
+++ b/video-gen-api/app/api/v1/payments.py
@@ -120,12 +120,15 @@ async def wechat_callback(request: Request, db: AsyncSession = Depends(get_db)):
             logger.error("WeChat payment config missing for callback")
             return {"code": "SUCCESS", "message": "OK"}
         
-        # 从请求头获取必要信息
-        headers = dict(request.headers)
-        timestamp = headers.get("Wechatpay-Timestamp", "")
-        nonce = headers.get("Wechatpay-Nonce", "")
-        signature = headers.get("Wechatpay-Signature", "")
-        serial_no = headers.get("Wechatpay-Serial", "")
+        # 从请求头获取必要信息（不区分大小写）
+        headers = {k.lower(): v for k, v in dict(request.headers).items()}
+        timestamp = headers.get("wechatpay-timestamp", "")
+        nonce = headers.get("wechatpay-nonce", "")
+        signature = headers.get("wechatpay-signature", "")
+        serial_no = headers.get("wechatpay-serial", "")
+        
+        # 记录调试信息
+        logger.debug(f"WeChat callback headers - timestamp:{timestamp}, nonce:{nonce[:10] if nonce else ''}, serial_no:{serial_no}")
         
         # 验证签名：使用平台公钥验证
         if public_key and serial_no: