diff --git a/model/line_user.go b/model/line_user.go
index fef4700..581c74c 100644
--- a/model/line_user.go
+++ b/model/line_user.go
@@ -28,3 +28,9 @@ func (p *LineUser) Add() (err error) {
 	_, err = x.NamedExec(`insert into "public"."line_user" ("id", "name") values (:id, :name)`, p)
 	return
 }
+
+// UpdateName -
+func (p *LineUser) UpdateName() (err error) {
+	_, err = x.NamedExec(`update "public"."line_user" set "name" = :name, "mtime" = now() where "id" = :id`, p)
+	return
+}
diff --git a/module/line-message/message-type.go b/module/line-message/message-type.go
index 805d800..c19e3df 100644
--- a/module/line-message/message-type.go
+++ b/module/line-message/message-type.go
@@ -6,6 +6,7 @@ import (
 	"net/url"
 	"os"
 	"path"
+	"time"
 
 	"git.trj.tw/golang/mtfosbot/model"
 	"git.trj.tw/golang/mtfosbot/module/apis/line"
@@ -71,6 +72,7 @@ func getSourceUser(uid, gid string) (u *model.LineUser, err error) {
 	if err != nil {
 		return
 	}
+
 	if userData == nil {
 		tmpu, err := line.GetUserInfo(uid, gid)
 		if err != nil || tmpu == nil {
@@ -83,6 +85,18 @@ func getSourceUser(uid, gid string) (u *model.LineUser, err error) {
 		if err != nil {
 			return nil, err
 		}
+	} else {
+		if userData.Mtime.Unix() < (time.Now().Unix() - 432000) {
+			tmpu, err := line.GetUserInfo(uid, gid)
+			if err != nil || tmpu == nil {
+				return nil, err
+			}
+			userData.Name = tmpu.DisplayName
+			err = userData.UpdateName()
+			if err != nil {
+				return nil, err
+			}
+		}
 	}
 
 	return userData, nil