diff --git a/library/think/Model.php b/library/think/Model.php
index d387296e..e7b5dcf3 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -207,7 +207,7 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
      * @param array $where 更新条件
      * @return integer
      */
-    public function save($data = [], $where = [], $getInsertId = true)
+    public function save($data = [], $where = [])
     {
         if (!empty($data)) {
             // 数据对象赋值
@@ -270,12 +270,13 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
             $result = self::db()->insert($this->data);
 
             // 获取自动增长主键
-            if ($result && $getInsertId) {
+            if ($result) {
                 $insertId = self::db()->getLastInsID();
                 $pk       = $this->getPk();
                 if (is_string($pk) && $insertId) {
                     $this->data[$pk] = $insertId;
                 }
+                $result = $insertId;
             }
             // 新增回调
             $this->trigger('after_insert', $this);
diff --git a/library/think/db/Connection.php b/library/think/db/Connection.php
index 59b2c0ca..69cd7a9d 100644
--- a/library/think/db/Connection.php
+++ b/library/think/db/Connection.php
@@ -303,9 +303,10 @@ abstract class Connection
      * @param string $sql  sql指令
      * @param array $bind 参数绑定
      * @param boolean $fetch  不执行只是获取SQL
+     * @param boolean $getLastInsID  是否获取自增ID
      * @return integer
      */
-    public function execute($sql, $bind = [], $fetch = false)
+    public function execute($sql, $bind = [], $fetch = false, $getLastInsID = false)
     {
         $this->initConnect(true);
         if (!$this->linkID) {
@@ -338,6 +339,9 @@ abstract class Connection
             $this->numRows = $this->PDOStatement->rowCount();
             if (preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $sql)) {
                 $this->lastInsID = $this->linkID->lastInsertId();
+                if ($getLastInsID) {
+                    return $this->lastInsID;
+                }
             }
             return $this->numRows;
         } catch (\PDOException $e) {
diff --git a/library/think/db/Query.php b/library/think/db/Query.php
index ced89e49..f3089ee3 100644
--- a/library/think/db/Query.php
+++ b/library/think/db/Query.php
@@ -1094,16 +1094,29 @@ class Query
      * @access public
      * @param mixed $data 数据
      * @param boolean $replace 是否replace
+     * @param boolean $getLastInsID  是否获取自增ID
      * @return integer
      */
-    public function insert(array $data, $replace = false)
+    public function insert(array $data, $replace = false, $getLastInsID = false)
     {
         // 分析查询表达式
         $options = $this->parseExpress();
         // 生成SQL语句
         $sql = $this->builder()->insert($data, $options, $replace);
         // 执行操作
-        return $this->connection->execute($sql, $this->getBind(), $options['fetch_sql']);
+        return $this->connection->execute($sql, $this->getBind(), $options['fetch_sql'], $getLastInsID);
+    }
+
+    /**
+     * 插入记录并获取自增ID
+     * @access public
+     * @param mixed $data 数据
+     * @param boolean $replace 是否replace
+     * @return integer
+     */
+    public function insertGetId(array $data, $replace = false)
+    {
+        return $this->insert($data, $replace, true);
     }
 
     /**
diff --git a/library/think/model/Merge.php b/library/think/model/Merge.php
index 541334d4..9ef94a70 100644
--- a/library/think/model/Merge.php
+++ b/library/think/model/Merge.php
@@ -145,7 +145,7 @@ class Merge extends Model
      * @param array $where 更新条件
      * @return mixed
      */
-    public function save($data = [], $where = [], $getInsertId = true)
+    public function save($data = [], $where = [])
     {
         if (!empty($data)) {
             // 数据对象赋值
@@ -211,6 +211,7 @@ class Merge extends Model
                         $data = $this->parseData($name, $this->data, true);
                         self::db()->table($table)->strict(false)->insert($data);
                     }
+                    $result = $insertId;
                 }
                 // 新增回调
                 $this->trigger('after_insert', $this);