diff --git a/app/common/lists/ListsSearchTrait.php b/app/common/lists/ListsSearchTrait.php
index bae153e..2f1d5b2 100644
--- a/app/common/lists/ListsSearchTrait.php
+++ b/app/common/lists/ListsSearchTrait.php
@@ -23,12 +23,16 @@ trait ListsSearchTrait
         }
         $where = [];
         $class_key=$this->request->__get('class_key');
-        foreach($class_key as $key => $value){
-            array_push($search[$key], $value); // 添加class_key的搜索条件
+        if($class_key!==null){
+            foreach($class_key as $key => $value){
+                array_push($search[$key], $value); // 添加class_key的搜索条件
+            }
         }
+
         $class_value=$this->request->__get('class_value'); // 获取class_value的值
-        if($class_value){
+        if($class_value!==null){
             $this->params=array_merge($this->params,$class_value);
+
         }
         foreach ($search as $whereType => $whereFields) {
             switch ($whereType) {