diff --git a/business/partner/purchase/mtwm/order_comment.go b/business/partner/purchase/mtwm/order_comment.go
index 4824df771..7b737204d 100644
--- a/business/partner/purchase/mtwm/order_comment.go
+++ b/business/partner/purchase/mtwm/order_comment.go
@@ -29,7 +29,7 @@ func (c *PurchaseHandler) StartRefreshComment() {
 }
 
 func (c *PurchaseHandler) refreshCommentOnce() {
-	globals.SugarLogger.Debugf("%s", utils.Format4Output(time.Now(), false))
+	globals.SugarLogger.Debugf("refreshCommentOnce = %s", utils.Format4Output(time.Now(), false))
 	c.RefreshComment(time.Now().Add(-RefreshCommentTime), time.Now())
 	utils.AfterFuncWithRecover(RefreshCommentTimeInterval, func() {
 		c.refreshCommentOnce()