diff --git a/redis/redis.go b/redis/redis.go
index 3e8a5b0..df2dacb 100644
--- a/redis/redis.go
+++ b/redis/redis.go
@@ -2,6 +2,7 @@ package redis
 
 import (
 	"context"
+	"errors"
 	"strings"
 	"sync"
 	"time"
@@ -37,7 +38,7 @@ func Lock(ctx context.Context, key string, expireSeconds int64, fn func(ctx cont
 	limit := 3
 LOOP:
 	if limit < 0 {
-		return
+		return false, errors.New("锁重试次数耗尽")
 	}
 	limit--
 	if val, err := RedisClient.Set(ctx, key, true, gredis.SetOption{
@@ -46,7 +47,7 @@ LOOP:
 		},
 		NX: true,
 	}); err != nil {
-		return
+		return false, err
 	} else {
 		if val.Bool() {
 			defer func(RedisClient *gredis.Redis, ctx context.Context, key string) {