diff --git a/time.go b/time.go
index bd3ba82..876da61 100644
--- a/time.go
+++ b/time.go
@@ -18,6 +18,7 @@ import (
 //
 // Date : 15:24 2022/5/14
 type ownTime struct {
+	format string
 }
 
 // GetCurrentFormatTime 获取当前时间的格式化时间(秒)
@@ -34,10 +35,13 @@ func (ot *ownTime) GetCurrentFormatTime() string {
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 11:54 2022/7/14
-func (ot *ownTime) FormatUnixNano(timestamp int64) string {
+func (ot *ownTime) FormatUnixNano(timestamp int64, layout ...string) string {
+	if len(layout) == 0 {
+		layout = []string{"2006-01-02 15:04:05.000"}
+	}
 	nano := timestamp % 1e6
 	milli := timestamp / 1e6
-	return ot.FormatUnixMilli(milli) + fmt.Sprintf(" %v", nano)
+	return ot.FormatUnixMilli(milli, layout...) + fmt.Sprintf(" %v", nano)
 }
 
 // FormatUnixMilli 格式化毫秒时间戳
@@ -45,8 +49,11 @@ func (ot *ownTime) FormatUnixNano(timestamp int64) string {
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 11:55 2022/7/14
-func (ot *ownTime) FormatUnixMilli(timestamp int64) string {
-	return time.UnixMilli(timestamp).In(time.Local).Format("2006-01-02 15:04:05.000")
+func (ot *ownTime) FormatUnixMilli(timestamp int64, layout ...string) string {
+	if len(layout) == 0 {
+		layout = []string{"2006-01-02 15:04:05.000"}
+	}
+	return time.UnixMilli(timestamp).In(time.Local).Format(layout[0])
 }
 
 // FormatUnixSec ...
@@ -54,8 +61,11 @@ func (ot *ownTime) FormatUnixMilli(timestamp int64) string {
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 12:06 2022/7/14
-func (ot *ownTime) FormatUnixSec(timestamp int64) string {
-	return time.Unix(timestamp, 0).In(time.Local).Format("2006-01-02 15:04:05")
+func (ot *ownTime) FormatUnixSec(timestamp int64, layout ...string) string {
+	if len(layout) == 0 {
+		layout = []string{"2006-01-02 15:04:05"}
+	}
+	return time.Unix(timestamp, 0).In(time.Local).Format(layout[0])
 }
 
 // ParseISO8601Time 解析 2006-01-02T15:04:05+08:00 格式时间 -> 2006-01-02 15:04:05