diff --git a/platformapi/mtwmapi/mtwmapi.go b/platformapi/mtwmapi/mtwmapi.go
index 8422c62a..0f394525 100644
--- a/platformapi/mtwmapi/mtwmapi.go
+++ b/platformapi/mtwmapi/mtwmapi.go
@@ -146,7 +146,7 @@ func (a *API) AccessAPI2(cmd string, isGet bool, bizParams map[string]interface{
 	}
 	signURL := a.genURL(cmd) + "?"
 	params[signKey] = a.signParams(signURL, params)
-	globals.SugarLogger.Debugf("test mtCancelAct cmd=%s sig=%s", cmd, params[signKey])
+	globals.SugarLogger.Debugf("test mtCancelAct cmd=%s sig=%s", cmd, utils.Format4Output(params, false))
 	err = platformapi.AccessPlatformAPIWithRetry(a.client,
 		func() *http.Request {
 			var request *http.Request