diff --git a/application/common/controller/Backend.php b/application/common/controller/Backend.php
index 100222f4c48aaf2c02d57399c2bfe401c3015642..d46b854f9286c59b22eeb08aaa7f470cd5ae4c7f 100644
--- a/application/common/controller/Backend.php
+++ b/application/common/controller/Backend.php
@@ -266,7 +266,7 @@ class Backend extends Controller
         if ($relationSearch) {
             if (!empty($this->model)) {
                 $name = \think\Loader::parseName(basename(str_replace('\\', '/', get_class($this->model))));
-                $tableName = $name . '.';
+                $tableName = Config::get('database.prefix') . $name . '.';
             }
             $sortArr = explode(',', $sort);
             foreach ($sortArr as $index => & $item) {