diff --git a/server/payserver/api/v1/mainservice/mainservice.go b/server/payserver/api/v1/mainservice/mainservice.go
index 347ea21..ac1a5e9 100644
--- a/server/payserver/api/v1/mainservice/mainservice.go
+++ b/server/payserver/api/v1/mainservice/mainservice.go
@@ -2,6 +2,7 @@ package mainservice
 
 import (
 	"crypto/sha1"
+	"encoding/hex"
 	"encoding/json"
 	"f5"
 	"io"
@@ -59,7 +60,7 @@ func (this *MainServiceApi) WxTNotify(c *gin.Context) {
 	sb.WriteString(strs[2])
 	m := sha1.New()
 	io.WriteString(m, sb.String())
-	sign := string(m.Sum(nil))
+	sign := string(hex.EncodeToString(m.Sum(nil)))
 
 	f5.GetSysLog().Debug("wx sign:%s, %s", sign, signature)