diff --git a/platformapi/wxpayapi/callback.go b/platformapi/wxpayapi/callback.go
index 488a12db..189a7ffa 100644
--- a/platformapi/wxpayapi/callback.go
+++ b/platformapi/wxpayapi/callback.go
@@ -9,6 +9,7 @@ import (
 	"strings"
 
 	"git.rosy.net.cn/baseapi/utils"
+	"git.rosy.net.cn/jx-callback/globals"
 	"github.com/clbanning/mxj"
 	"github.com/nanjishidu/gomini/gocrypto"
 )
@@ -175,6 +176,7 @@ func (a *API) getCallbackMsg(msgBody string) (msg *CallbackMsg, callbackResponse
 		sign := utils.Interface2String(mapData[sigKey])
 		desiredSign := a.signParam(sigType, mapData)
 		if desiredSign != sign {
+			globals.SugarLogger.Debugf("transactionID:%s, sigType:%s, desiredSign:%s <> sign:%s", transactionID, sigType, desiredSign, sign)
 			return nil, Err2CallbackResponse(fmt.Errorf("desiredSign:%s <> sign:%s", desiredSign, sign), "")
 		}
 	}