diff --git a/app/index/controller/Index.php b/app/index/controller/Index.php
index 2e2be92..0ff05f3 100644
--- a/app/index/controller/Index.php
+++ b/app/index/controller/Index.php
@@ -42,7 +42,9 @@ class Index extends Common
             $page_title = $current_category->title;
 
             $sub_category = Category::where('pid', $category_id)->where('type', 3)->order('sort asc')->select();
-            if (empty($this->request->param('sub_category_id'))) {
+
+            $sub_category_id = $this->request->param('sub_category_id');
+            if (empty($sub_category_id)) {
                 $categorys = [$category_id];
 
                 $categorys = array_merge($categorys, array_column((array)Category::getListLevel($category_id), 3));
@@ -51,8 +53,11 @@ class Index extends Common
 
                 $model_post = Post::hasWhere('categorys', $categorys_where)->where('status', 1)->order('id desc');
             } else {
-                $page_title .= "|{$sub_category->title}";
-                $model_post = Post::hasWhere('categorys', ['category_id' => $this->request->param('sub_category_id')])->where('status', 1)->order('id desc');
+
+                $model_sub_category = Category::find($sub_category_id);
+
+                $page_title .= "|{$model_sub_category->title}";
+                $model_post = Post::hasWhere('categorys', ['category_id' => $sub_category_id])->where('status', 1)->order('id desc');
             }
         } else {