diff --git a/library/think/Model.php b/library/think/Model.php
index 98eacc8a..fa6ed492 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -1067,6 +1067,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
         } elseif ($data instanceof \Closure) {
             call_user_func_array($data, [ & $query]);
             $data = null;
+        } elseif (is_null($data)) {
+            return 0;
         }
         $resultSet = $query->select($data);
         $count     = 0;