diff --git a/library/think/Model.php b/library/think/Model.php
index 386ddaea..301c7f1c 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -324,6 +324,17 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
         }
     }
 
+    /**
+     * 是否需要自动写入时间字段
+     * @access public
+     * @param bool $auto 
+     * @return $this
+     */
+    public function autoWriteTimestamp($auto){
+        $this->autoWriteTimestamp = $auto;
+        return $this;
+    }
+
     /**
      * 修改器 设置数据对象值
      * @access public