diff --git a/library/think/Model.php b/library/think/Model.php
index 386660c4..cbf565ff 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -94,6 +94,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     protected $type = [];
     // 是否为更新数据
     protected $isUpdate = false;
+    // 是否使用Replace
+    protected $replace = false;
     // 是否强制更新所有数据
     protected $force = false;
     // 更新条件
@@ -1013,6 +1015,18 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
         return false;
     }
 
+    /**
+     * 新增数据是否使用Replace
+     * @access public
+     * @param  bool $replace
+     * @return $this
+     */
+    public function replace($replace = true)
+    {
+        $this->replace = $replace;
+        return $this;
+    }
+
     /**
      * 保存当前数据对象
      * @access public
@@ -1163,9 +1177,9 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
             // 检测字段
             $allowFields = $this->checkAllowField(array_merge($this->auto, $this->insert));
             if (!empty($allowFields)) {
-                $result = $this->getQuery()->strict(false)->field($allowFields)->insert($this->data, false, false, $sequence);
+                $result = $this->getQuery()->strict(false)->field($allowFields)->insert($this->data, $this->replace, false, $sequence);
             } else {
-                $result = $this->getQuery()->insert($this->data, false, false, $sequence);
+                $result = $this->getQuery()->insert($this->data, $this->replace, false, $sequence);
             }
 
             // 获取自动增长主键
diff --git a/library/think/model/relation/MorphOne.php b/library/think/model/relation/MorphOne.php
index 901b9e61..bbb1a919 100644
--- a/library/think/model/relation/MorphOne.php
+++ b/library/think/model/relation/MorphOne.php
@@ -53,7 +53,7 @@ class MorphOne extends Relation
     public function getRelation($subRelation = '', $closure = null)
     {
         if ($closure) {
-            call_user_func_array($closure, [ & $this->query]);
+            call_user_func_array($closure, [& $this->query]);
         }
         $relationModel = $this->relation($subRelation)->find();
 
@@ -81,8 +81,8 @@ class MorphOne extends Relation
     /**
      * 根据关联条件查询当前模型
      * @access public
-     * @param  mixed  $where 查询条件（数组或者闭包）
-     * @param  mixed  $fields   字段
+     * @param  mixed $where  查询条件（数组或者闭包）
+     * @param  mixed $fields 字段
      * @return Query
      */
     public function hasWhere($where = [], $fields = null)
@@ -179,7 +179,7 @@ class MorphOne extends Relation
     {
         // 预载入关联查询 支持嵌套预载入
         if ($closure) {
-            call_user_func_array($closure, [ & $this]);
+            call_user_func_array($closure, [& $this]);
         }
         $list     = $this->query->where($where)->with($subRelation)->find();
         $morphKey = $this->morphKey;
@@ -198,6 +198,17 @@ class MorphOne extends Relation
      * @return Model|false
      */
     public function save($data)
+    {
+        $model = $this->make($data);
+        return $model->save() ? $model : false;
+    }
+
+    /**
+     * 创建关联对象实例
+     * @param array $data
+     * @return mixed
+     */
+    public function make($data = [])
     {
         if ($data instanceof Model) {
             $data = $data->getData();
@@ -205,10 +216,10 @@ class MorphOne extends Relation
         // 保存关联表数据
         $pk = $this->parent->getPk();
 
-        $model                  = new $this->model;
         $data[$this->morphKey]  = $this->parent->$pk;
         $data[$this->morphType] = $this->type;
-        return $model->save($data) ? $model : false;
+
+        return new $this->model($data);
     }
 
     /**