diff --git a/library/think/db/Connection.php b/library/think/db/Connection.php
index dee87494..24fe07f4 100644
--- a/library/think/db/Connection.php
+++ b/library/think/db/Connection.php
@@ -338,8 +338,8 @@ abstract class Connection
      * @param bool          $master 是否在主服务器读操作
      * @param bool          $pdo 是否返回PDO对象
      * @return mixed
-     * @throws BindParamException
      * @throws PDOException
+     * @throws \Exception
      */
     public function query($sql, $bind = [], $master = false, $pdo = false)
     {
@@ -400,8 +400,8 @@ abstract class Connection
      * @param string        $sql sql指令
      * @param array         $bind 参数绑定
      * @return int
-     * @throws BindParamException
      * @throws PDOException
+     * @throws \Exception
      */
     public function execute($sql, $bind = [])
     {
@@ -552,7 +552,7 @@ abstract class Connection
      * @access protected
      * @param bool   $pdo 是否返回PDOStatement
      * @param bool   $procedure 是否存储过程
-     * @return array
+     * @return PDOStatement|array
      */
     protected function getResult($pdo = false, $procedure = false)
     {
@@ -618,7 +618,8 @@ abstract class Connection
     /**
      * 启动事务
      * @access public
-     * @return void
+     * @return bool|mixed
+     * @throws \Exception
      */
     public function startTrans()
     {
@@ -782,7 +783,7 @@ abstract class Connection
     /**
      * 是否断线
      * @access protected
-     * @param \PDOException  $e 异常对象
+     * @param \PDOException|\Exception  $e 异常对象
      * @return bool
      */
     protected function isBreak($e)
diff --git a/library/think/db/Query.php b/library/think/db/Query.php
index f18f38bc..91499647 100644
--- a/library/think/db/Query.php
+++ b/library/think/db/Query.php
@@ -2336,7 +2336,7 @@ class Query
             $modelName = $this->model;
             if (count($resultSet) > 0) {
                 foreach ($resultSet as $key => $result) {
-                    /** @var Model $result */
+                    /** @var Model $model */
                     $model = new $modelName($result);
                     $model->isUpdate(true);
 
@@ -2392,6 +2392,7 @@ class Query
      * @param mixed     $value   缓存数据
      * @param array     $options 缓存参数
      * @param array     $bind    绑定参数
+     * @return string
      */
     protected function getCacheKey($value, $options, $bind = [])
     {
diff --git a/library/think/model/relation/BelongsTo.php b/library/think/model/relation/BelongsTo.php
index a32cc124..dfd74a59 100644
--- a/library/think/model/relation/BelongsTo.php
+++ b/library/think/model/relation/BelongsTo.php
@@ -11,6 +11,7 @@
 
 namespace think\model\relation;
 
+use think\db\Query;
 use think\Loader;
 use think\Model;
 
@@ -68,7 +69,6 @@ class BelongsTo extends OneToOne
      * @param string  $operator 比较操作符
      * @param integer $count    个数
      * @param string  $id       关联表的统计字段
-     * @param string  $joinType JOIN类型
      * @return Query
      */
     public function has($operator = '>=', $count = 1, $id = '*')