diff --git a/flower_back/src/main/java/com/example/flower/mapper/xml/CommentMapper.xml b/flower_back/src/main/java/com/example/flower/mapper/xml/CommentMapper.xml
new file mode 100644
index 0000000..25e880a
--- /dev/null
+++ b/flower_back/src/main/java/com/example/flower/mapper/xml/CommentMapper.xml
@@ -0,0 +1,18 @@
+<?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.example.flower.mapper.CommentMapper">
+    <select id="commentList" resultType="com.example.flower.entity.Comment">
+        select *
+        from flower.comment
+        where flower_id=#{flower_id}
+        order by comment_id desc
+    </select>
+    <insert id="commentAdd" useGeneratedKeys="true" keyProperty="comment_id" parameterType="com.example.flower.entity.Comment">
+        insert into flower.comment(flower_id, user_id, comment_content, comment_time)
+            value (#{flower_id},#{user_id},#{comment_content},#{comment_time})
+    </insert>
+    <select id="findAllComment" resultType="com.example.flower.entity.Comment">
+        select *
+        from flower.comment
+    </select>
+</mapper>
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