diff --git a/library/think/Db.php b/library/think/Db.php
index e46bc80a..f3b0e274 100644
--- a/library/think/Db.php
+++ b/library/think/Db.php
@@ -14,6 +14,7 @@ namespace think;
 use think\App;
 use think\Collection;
 use think\db\Query;
+use think\paginator\Collection as PaginatorCollection;
 
 /**
  * Class Db
diff --git a/library/think/db/Connection.php b/library/think/db/Connection.php
index 2e716b29..38887b09 100644
--- a/library/think/db/Connection.php
+++ b/library/think/db/Connection.php
@@ -23,6 +23,13 @@ use think\Exception;
 use think\exception\PDOException;
 use think\Log;
 
+/**
+ * Class Connection
+ * @package think
+ * @method Query table(string $table) 指定数据表（含前缀）
+ * @method Query name(string $name) 指定数据表（不含前缀）
+ *
+ */
 abstract class Connection
 {