diff --git a/rest/response.go b/rest/response.go
index 23d8268..62f8215 100644
--- a/rest/response.go
+++ b/rest/response.go
@@ -41,7 +41,8 @@ func (e *APIResponse) Render(w http.ResponseWriter, r *http.Request) {
 
 	w.WriteHeader(e.HTTPCode)
 
-	err := json.MarshalWrite(w, e)
+	// Deterministic 保证 map 类型字段按 key 排序输出，避免每次响应顺序随机
+	err := json.MarshalWrite(w, e, json.Deterministic(true))
 	if err != nil {
 		slog.Error("render resp failed", "err", err)
 	}