diff --git a/library/think/db/Query.php b/library/think/db/Query.php
index 3bd7aeec..190874e7 100644
--- a/library/think/db/Query.php
+++ b/library/think/db/Query.php
@@ -239,24 +239,22 @@ class Query
     /**
      * 启动事务
      * @access public
-     * @param string $label 事务标识
      * @return bool|null
      */
-    public function startTrans($label = '')
+    public function startTrans()
     {
-        return $this->connection->startTrans($label);
+        return $this->connection->startTrans();
     }
 
     /**
      * 用于非自动提交状态下面的查询提交
      * @access public
-     * @param string $label 事务标识
      * @return boolean
      * @throws PDOException
      */
-    public function commit($label = '')
+    public function commit()
     {
-        return $this->connection->commit($label);
+        return $this->connection->commit();
     }
 
     /**
diff --git a/library/think/model/Merge.php b/library/think/model/Merge.php
index 5672ebc0..3da4fc07 100644
--- a/library/think/model/Merge.php
+++ b/library/think/model/Merge.php
@@ -173,7 +173,7 @@ class Merge extends Model
         }
 
         $db = $this->db();
-        $db->startTrans('merge_save_' . $this->name);
+        $db->startTrans();
         try {
             if ($this->isUpdate) {
                 // 自动写入
@@ -235,7 +235,7 @@ class Merge extends Model
                 // 新增回调
                 $this->trigger('after_insert', $this);
             }
-            $db->commit('merge_save_' . $this->name);
+            $db->commit();
             return $result;
         } catch (\PDOException $e) {
             $db->rollback();
@@ -255,7 +255,7 @@ class Merge extends Model
         }
 
         $db = $this->db();
-        $db->startTrans('merge_delete_' . $this->name);
+        $db->startTrans();
         try {
             $result = $db->delete($this->data);
             if ($result) {
@@ -270,7 +270,7 @@ class Merge extends Model
                 }
             }
             $this->trigger('after_delete', $this);
-            $db->commit('merge_delete_' . $this->name);
+            $db->commit();
             return $result;
         } catch (\PDOException $e) {
             $db->rollback();