diff --git a/src/main/java/com/bao/dating/mapper/ChatRecordsMapper.java b/src/main/java/com/bao/dating/mapper/ChatRecordsMapper.java
index b716e5e..646fe67 100644
--- a/src/main/java/com/bao/dating/mapper/ChatRecordsMapper.java
+++ b/src/main/java/com/bao/dating/mapper/ChatRecordsMapper.java
@@ -12,11 +12,18 @@ import java.util.List;
 public interface ChatRecordsMapper {
     /**
      * 插入聊天记录
+     * @param chatRecords 聊天记录
+     * @return 影响行数
      */
     int insert(ChatRecords chatRecords);
 
     /**
-     * 根据用户ID和接收方用户ID查询聊天记录
+     * 根据时间游标查询聊天记录
+     * @param currentUserId 当前用户ID
+     * @param targetUserId 目标用户ID
+     * @param cursor 时间游标
+     * @param size 页大小
+     * @return 聊天记录列表
      */
     List<ChatRecords> selectChatHistoryByCursor(
             @Param("currentUserId") Long currentUserId,
@@ -26,7 +33,11 @@ public interface ChatRecordsMapper {
     );
 
     /**
-     * 标记消息为已读
+     * 标记聊天记录为已读
+     * @param senderUserId 发送方用户ID
+     * @param receiverUserId 接收方用户ID
+     * @param readTime 已读时间
+     * @return 影响行数
      */
     int markMessagesAsRead(
             @Param("senderUserId") Long senderUserId,
diff --git a/src/main/java/com/bao/dating/mapper/ChatSessionsMapper.java b/src/main/java/com/bao/dating/mapper/ChatSessionsMapper.java
index d32d91e..f0afc7e 100644
--- a/src/main/java/com/bao/dating/mapper/ChatSessionsMapper.java
+++ b/src/main/java/com/bao/dating/mapper/ChatSessionsMapper.java
@@ -37,7 +37,10 @@ public interface ChatSessionsMapper {
     int updateSessionForReceiver(ChatSessions chatSessions);
 
     /**
-     * 清空会话未读数
+     *  清空会话的未读数
+     *  @param userId 用户ID
+     *  @param targetUserId 目标用户ID
+     *  @return 影响行数
      */
     int clearUnreadCount(
             @Param("userId") Long userId,