diff --git a/utils/utils.go b/utils/utils.go
index 36dc867a..dfafcdaa 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -146,19 +146,25 @@ func GetUUID() string {
 }
 
 func GetCurTimeStr() string {
-	return time.Now().Format("2006-01-02 15:04:05")
+	return Time2Str(time.Now())
 }
 
+// timestamp is in second
 func GetCurTimestamp() int64 {
 	return time.Now().Unix()
 }
 
 func GetAPIOperator() string {
-	return time.Now().Format("2006-01-02_15:04:05")
+	return Time2Str(time.Now())
 }
 
+// timestamp is in second
 func Timestamp2Str(timestamp int64) string {
-	return time.Unix(timestamp/1000, 0).Format("2006-01-02 15:04:05")
+	return Time2Str(time.Unix(timestamp, 0))
+}
+
+func Time2Str(t time.Time) string {
+	return t.Format("2006-01-02 15:04:05")
 }
 
 func HTTPResponse2Json(response *http.Response) (map[string]interface{}, error) {