diff --git a/src/main/java/com/guo/learningprogresstracker/mapper/ReviewMapper.java b/src/main/java/com/guo/learningprogresstracker/mapper/ReviewMapper.java
deleted file mode 100644
index 27f25df..0000000
--- a/src/main/java/com/guo/learningprogresstracker/mapper/ReviewMapper.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.guo.learningprogresstracker.mapper;
-
-import com.guo.learningprogresstracker.dto.ReviewFeedItem;
-import org.apache.ibatis.annotations.Mapper;
-import org.apache.ibatis.annotations.Param;
-
-import java.util.List;
-
-/**
- * 复习模块自定义查询 Mapper
- */
-@Mapper
-public interface ReviewMapper {
-
-    /**
-     * 获取最近的学习报告和残片，合并排序后返回
-     */
-    List<ReviewFeedItem> selectReviewFeed(@Param("limit") int limit);
-
-    /**
-     * 获取指定任务下的所有报告和残片，按时间倒序
-     */
-    List<ReviewFeedItem> selectTaskReview(@Param("taskNum") String taskNum);
-}
diff --git a/src/main/resources/mapper/ReviewMapper.xml b/src/main/resources/mapper/ReviewMapper.xml
deleted file mode 100644
index 64bd793..0000000
--- a/src/main/resources/mapper/ReviewMapper.xml
+++ /dev/null
@@ -1,55 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE mapper
-        PUBLIC "-//mybatis-org//DTD Mapper 3.0//EN"
-        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
-<mapper namespace="com.guo.learningprogresstracker.mapper.ReviewMapper">
-
-    <select id="selectReviewFeed" resultType="com.guo.learningprogresstracker.dto.ReviewFeedItem">
-        SELECT
-            combined.id,
-            combined.session_num   AS sessionNum,
-            combined.source_type   AS sourceType,
-            combined.content,
-            combined.created_time  AS createdTime,
-            t.task_num             AS taskNum,
-            t.task_name            AS taskName
-        FROM (
-            SELECT r.id, r.session_num, r.content, r.created_time, 'REPORT' AS source_type
-            FROM study_reports r
-            WHERE r.deleted = 0
-            UNION ALL
-            SELECT f.id, f.session_num, f.content, f.created_time, 'FRAGMENT' AS source_type
-            FROM study_report_fragments f
-            WHERE f.deleted = 0
-        ) combined
-        JOIN study_sessions ss ON combined.session_num = ss.session_num AND ss.deleted = 0
-        JOIN tasks t ON ss.task_num = t.task_num AND t.deleted = 0
-        ORDER BY combined.created_time DESC
-        LIMIT #{limit}
-    </select>
-
-    <select id="selectTaskReview" resultType="com.guo.learningprogresstracker.dto.ReviewFeedItem">
-        SELECT
-            combined.id,
-            combined.session_num   AS sessionNum,
-            combined.source_type   AS sourceType,
-            combined.content,
-            combined.created_time  AS createdTime,
-            t.task_num             AS taskNum,
-            t.task_name            AS taskName
-        FROM (
-            SELECT r.id, r.session_num, r.content, r.created_time, 'REPORT' AS source_type
-            FROM study_reports r
-            WHERE r.deleted = 0
-            UNION ALL
-            SELECT f.id, f.session_num, f.content, f.created_time, 'FRAGMENT' AS source_type
-            FROM study_report_fragments f
-            WHERE f.deleted = 0
-        ) combined
-        JOIN study_sessions ss ON combined.session_num = ss.session_num AND ss.deleted = 0
-        JOIN tasks t ON ss.task_num = t.task_num AND t.deleted = 0
-        WHERE t.task_num = #{taskNum}
-        ORDER BY combined.created_time DESC
-    </select>
-
-</mapper>