diff --git a/services/stat/client.go b/services/stat/client.go
index 7914893..bfd3c5f 100644
--- a/services/stat/client.go
+++ b/services/stat/client.go
@@ -150,3 +150,12 @@ func (c *Client) SetSiteKey(req *SetSiteKeyReq) (resp *SetSiteKeyResp, err error
 	err = c.DoAction(req, resp)
 	return
 }
+
+// CallbackWeightUpdate 回调权重更新
+func (c *Client) CallbackWeightUpdate(req *CallbackWeightUpdateReq) (resp *CallbackWeightUpdateResp, err error) {
+	resp = &CallbackWeightUpdateResp{
+		BaseResponse: &responses.BaseResponse{},
+	}
+	err = c.DoAction(req, resp)
+	return
+}
diff --git a/services/stat/client_test.go b/services/stat/client_test.go
index 57d22d3..dee3bbc 100644
--- a/services/stat/client_test.go
+++ b/services/stat/client_test.go
@@ -336,3 +336,17 @@ func TestSetSiteKey(t *testing.T) {
 	}
 	_ = resp
 }
+
+func TestCallbackWeightUpdate(t *testing.T) {
+	client, err := NewClient()
+	if err != nil {
+		t.Log(err)
+		return
+	}
+	resp, err := client.CallbackWeightUpdate(CreateCallbackWeightUpdateReq())
+	if err != nil {
+		t.Log(err)
+		return
+	}
+	t.Log(resp)
+}
diff --git a/services/stat/site.go b/services/stat/site.go
index 0a4dc89..09ab7d5 100644
--- a/services/stat/site.go
+++ b/services/stat/site.go
@@ -52,3 +52,34 @@ func CreateSetSiteKeyResp() *GetUserTotalPayResp {
 		BaseResponse: &responses.BaseResponse{},
 	}
 }
+
+// CallbackWeightUpdateReq 回调权重更新，用于刷新回调权重缓存
+type CallbackWeightUpdateReq struct {
+	*requests.RpcRequest
+}
+
+// CreateCallbackWeightUpdateReq
+// 创建回调权重更新请求
+func CreateCallbackWeightUpdateReq() *CallbackWeightUpdateReq {
+	req := &CallbackWeightUpdateReq{
+		&requests.RpcRequest{},
+	}
+	req.InitWithApiInfo(HOST, VERSION, "api/site/callbackWeight")
+	req.Method = requests.POST
+	req.FormParams = make(map[string]string)
+	req.FormParams["act"] = "update"
+
+	return req
+}
+
+type CallbackWeightUpdateResp struct {
+	*responses.BaseResponse
+	Code int    `json:"code"`
+	Msg  string `json:"msg"`
+}
+
+func CreateCallbackWeightUpdateResp() *CallbackWeightUpdateResp {
+	return &CallbackWeightUpdateResp{
+		BaseResponse: &responses.BaseResponse{},
+	}
+}