diff --git a/app/admin/models/sys_opera_log.go b/app/admin/models/sys_opera_log.go
index eb68a0b9..8082118a 100644
--- a/app/admin/models/sys_opera_log.go
+++ b/app/admin/models/sys_opera_log.go
@@ -75,9 +75,10 @@ func SaveOperaLog(message storage.Messager) (err error) {
 		return nil
 	}
 	// 超出100个字符返回值截断
-	if len(l.JsonResult) > 100 {
-		l.JsonResult = l.JsonResult[:100]
+	if r := []rune(l.JsonResult); len(r) > 100 {
+		l.JsonResult = string(r[:100])
 	}
+
 	err = db.Create(&l).Error
 	if err != nil {
 		log.Errorf("db create error, %s", err.Error())