diff --git a/library/think/Model.php b/library/think/Model.php
index efa9b4e3..e38ccd3b 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -756,9 +756,6 @@ class Model
             $options = array_merge($this->options, $options);
         }
 
-        if (!empty($options['alias'])) {
-            $options['table'] .= ' ' . $options['alias'];
-        }
         // 记录操作的模型名称
         $options['model'] = $this->name;
 
@@ -770,6 +767,9 @@ class Model
             $options['table'] = $this->getTableName();
             $fields           = $this->getDbFields();
         }
+        if (!empty($options['alias'])) {
+            $options['table'] .= ' ' . $options['alias'];
+        }
         // 字段类型验证
         if (isset($options['where']) && is_array($options['where']) && !empty($fields)) {
             // 对数组查询条件进行字段类型检查
diff --git a/library/think/db/driver/Mysql.php b/library/think/db/driver/Mysql.php
index c8bea256..6f2ba59c 100644
--- a/library/think/db/driver/Mysql.php
+++ b/library/think/db/driver/Mysql.php
@@ -43,7 +43,6 @@ class Mysql extends Driver
      * 取得数据表的字段信息
      * @access public
      * @param $tableName
-     *
      * @return array
      */
     public function getFields($tableName)
@@ -71,9 +70,7 @@ class Mysql extends Driver
     /**
      * 取得数据库的表信息
      * @access public
-     *
      * @param string $dbName
-     *
      * @return array
      */
     public function getTables($dbName = '')
@@ -107,7 +104,6 @@ class Mysql extends Driver
         return $key;
     }
 
-
     /**
      * 随机排序
      * @access protected