diff --git a/src/main/resources/mapper/ComplainMapper.xml b/src/main/resources/mapper/ComplainMapper.xml
new file mode 100644
index 0000000..978ca2e
--- /dev/null
+++ b/src/main/resources/mapper/ComplainMapper.xml
@@ -0,0 +1,55 @@
+<?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.pt5.pthouduan.mapper.ComplainMapper">
+
+    <!-- 插入投诉 -->
+    <insert id="save" parameterType="com.pt5.pthouduan.entity.Complain" useGeneratedKeys="true" keyProperty="complainid">
+        INSERT INTO complain (puse, duser, content, torrentid)
+        VALUES (#{puse}, #{duser}, #{content}, #{torrentid})
+    </insert>
+
+    <!-- 根据投诉ID删除投诉 -->
+    <delete id="deleteByComplainid" parameterType="int">
+        DELETE FROM complain WHERE complainid = #{complainid}
+    </delete>
+
+    <!-- 更新投诉 -->
+    <update id="updateComplain" parameterType="com.pt5.pthouduan.entity.Complain">
+        UPDATE complain
+        SET puse = #{puse},
+            duser = #{duser},
+            content = #{content},
+            torrentid = #{torrentid}
+        WHERE complainid = #{complainid}
+    </update>
+
+    <!-- 根据被投诉用户ID查询投诉列表 -->
+    <select id="selectByDuser" parameterType="long" resultType="com.pt5.pthouduan.entity.Complain">
+        SELECT * FROM complain
+        WHERE duser = #{duser}
+        ORDER BY complainid DESC
+    </select>
+
+    <!-- 根据投诉发起人ID查询投诉列表 -->
+    <select id="selectByPuse" parameterType="long" resultType="com.pt5.pthouduan.entity.Complain">
+        SELECT * FROM complain
+        WHERE puse = #{puse}
+        ORDER BY complainid DESC
+    </select>
+
+    <!-- ✅ 获取所有投诉记录 -->
+    <select id="selectAllComplains" resultType="com.pt5.pthouduan.entity.Complain">
+        SELECT * FROM complain
+        ORDER BY complainid DESC
+    </select>
+
+    <!-- ✅ 根据投诉ID查询投诉详情 -->
+    <select id="selectByComplainId" parameterType="int" resultType="com.pt5.pthouduan.entity.Complain">
+        SELECT * FROM complain
+        WHERE complainid = #{complainid}
+    </select>
+
+</mapper>