diff --git a/library/think/Model.php b/library/think/Model.php
index 12948b6e..1310cf0f 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -343,14 +343,15 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
             $method = 'set' . Loader::parseName($name, 1) . 'Attr';
             if (method_exists($this, $method)) {
                 $value = $this->$method($value, array_merge($this->data, $data));
-            }
-            if ($this->isRelationAttr($name)) {
-                $isRelationData = true;
             } elseif (isset($this->type[$name])) {
                 // 类型转换
                 $value = $this->writeTransform($value, $this->type[$name]);
             }
 
+            if ($this->isRelationAttr($name)) {
+                $isRelationData = true;
+            }
+
         }
 
         // 设置数据对象属性