diff --git a/redis.pb.go b/redis.pb.go
index a445657..0134285 100644
--- a/redis.pb.go
+++ b/redis.pb.go
@@ -220,7 +220,7 @@ func (m *SetResponse) GetRet() string {
 
 // 删除key响应结构
 type DelResponse struct {
-	Ret              *string `protobuf:"bytes,1,opt,name=ret" json:"ret,omitempty"`
+	Ret              *uint64 `protobuf:"varint,1,opt,name=ret" json:"ret,omitempty"`
 	XXX_unrecognized []byte  `json:"-"`
 }
 
@@ -228,11 +228,11 @@ func (m *DelResponse) Reset()         { *m = DelResponse{} }
 func (m *DelResponse) String() string { return proto.CompactTextString(m) }
 func (*DelResponse) ProtoMessage()    {}
 
-func (m *DelResponse) GetRet() string {
+func (m *DelResponse) GetRet() uint64 {
 	if m != nil && m.Ret != nil {
 		return *m.Ret
 	}
-	return ""
+	return 0
 }
 
 func init() {
diff --git a/redis.proto b/redis.proto
index d41846f..ccb12d8 100644
--- a/redis.proto
+++ b/redis.proto
@@ -45,7 +45,7 @@ message SetResponse {
 
 // 删除key响应结构
 message DelResponse {
-    string ret = 1;
+    uint64 ret = 1;
 }
 // rpc方法
 service RedisService {
diff --git a/string.go b/string.go
index f0249f4..8234888 100644
--- a/string.go
+++ b/string.go
@@ -53,12 +53,12 @@ func Set(key, value string, ttl string, url ...string) (string, error) {
 }
 
 //设置
-func Del(key string, url ...string) (string, error) {
+func Del(key string, url ...string) (uint64, error) {
 
 	conn, _, err := Conn(url...)
 
 	if err != nil {
-		return "", err
+		return 0, err
 	}
 	defer conn.Close()
 
@@ -69,7 +69,7 @@ func Del(key string, url ...string) (string, error) {
 	err = conn.Del(req, res)
 
 	if err != nil {
-		return "", err
+		return 0, err
 	}
 
 	return res.GetRet(), nil