diff --git a/src/main/java/cn/celess/blog/entity/WebUpdate.java b/src/main/java/cn/celess/blog/entity/WebUpdate.java
index 8cb3ee6..4e2a99e 100644
--- a/src/main/java/cn/celess/blog/entity/WebUpdate.java
+++ b/src/main/java/cn/celess/blog/entity/WebUpdate.java
@@ -17,11 +17,12 @@ public class WebUpdate {
 
     private Date updateTime;
 
+    private boolean delete;
+
     public WebUpdate() {
     }
 
-    public WebUpdate(String updateInfo, Date updateTime) {
+    public WebUpdate(String updateInfo) {
         this.updateInfo = updateInfo;
-        this.updateTime = updateTime;
     }
 }
diff --git a/src/main/java/cn/celess/blog/mapper/WebUpdateInfoMapper.java b/src/main/java/cn/celess/blog/mapper/WebUpdateInfoMapper.java
index d2fa669..ee9f119 100644
--- a/src/main/java/cn/celess/blog/mapper/WebUpdateInfoMapper.java
+++ b/src/main/java/cn/celess/blog/mapper/WebUpdateInfoMapper.java
@@ -27,5 +27,7 @@ public interface WebUpdateInfoMapper {
 
     List<WebUpdate> findAll();
 
+    List<WebUpdate> findAllNotDeleted();
+
     WebUpdate getLastestOne();
 }
diff --git a/src/main/resources/mapper/WebUpdateInfoMapper.xml b/src/main/resources/mapper/WebUpdateInfoMapper.xml
index ce12748..4f42e4e 100644
--- a/src/main/resources/mapper/WebUpdateInfoMapper.xml
+++ b/src/main/resources/mapper/WebUpdateInfoMapper.xml
@@ -2,47 +2,53 @@
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 <mapper namespace="cn.celess.blog.mapper.WebUpdateInfoMapper">
     <resultMap id="webUpdateResultMap" type="cn.celess.blog.entity.WebUpdate">
-        <id column="update_id" property="id"/>
-        <result column="update_info" property="updateInfo"/>
-        <result column="update_time" property="updateTime"/>
+        <id column="wu_id" property="id"/>
+        <result column="wu_info" property="updateInfo"/>
+        <result column="wu_time" property="updateTime"/>
+        <result column="is_delete" property="delete"/>
     </resultMap>
-    <insert id="insert" parameterType="cn.celess.blog.entity.WebUpdate">
-        insert into web_update(update_info, update_time)
-        values (#{updateInfo}, #{updateTime})
-        <selectKey resultType="java.lang.Long" keyProperty="id">
-            SELECT LAST_INSERT_ID() AS id
-        </selectKey>
+
+    <insert id="insert" parameterType="cn.celess.blog.entity.WebUpdate" useGeneratedKeys="true" keyProperty="id">
+        insert into web_update(wu_info, wu_time, is_delete)
+        values (#{updateInfo}, now(), false)
     </insert>
 
     <update id="update">
         update web_update
-        set update_info=#{info}
-        where update_id = #{id};
-
+        set wu_info=#{info}
+        where wu_id = #{id};
     </update>
 
-    <delete id="delete">
-        delete
-        from web_update
-        where update_id = #{id}
-    </delete>
+    <update id="delete">
+        update web_update
+        set is_delete = true
+        where wu_id = #{id}
+    </update>
     <select id="existsById" resultType="java.lang.Boolean">
-        select EXISTS(select * from web_update where update_id = #{id})
+        select EXISTS(select * from web_update where wu_id = #{id})
     </select>
+
     <select id="findById" resultMap="webUpdateResultMap">
         select *
         from web_update
-        where update_id = #{id}
+        where wu_id = #{id}
     </select>
 
     <select id="findAll" resultMap="webUpdateResultMap">
         select *
         from web_update
     </select>
+
+    <select id="findAllNotDeleted" resultMap="webUpdateResultMap">
+        select *
+        from web_update
+        where is_delete = false
+    </select>
+
     <select id="getLastestOne" resultMap="webUpdateResultMap">
         select *
         from web_update
-        order by update_id desc
+        order by wu_id desc
         limit 1
     </select>
 
diff --git a/src/test/java/cn/celess/blog/mapper/WebUpdateInfoMapperTest.java b/src/test/java/cn/celess/blog/mapper/WebUpdateInfoMapperTest.java
new file mode 100644
index 0000000..2ddd107
--- /dev/null
+++ b/src/test/java/cn/celess/blog/mapper/WebUpdateInfoMapperTest.java
@@ -0,0 +1,80 @@
+package cn.celess.blog.mapper;
+
+import cn.celess.blog.BaseTest;
+import cn.celess.blog.entity.WebUpdate;
+import org.junit.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import java.util.List;
+
+import static org.junit.Assert.*;
+
+public class WebUpdateInfoMapperTest extends BaseTest {
+
+    @Autowired
+    WebUpdateInfoMapper webUpdateInfoMapper;
+
+    @Test
+    public void insert() {
+        WebUpdate webUpdate = generateUpdateInfo();
+        assertNotNull(webUpdate);
+    }
+
+    @Test
+    public void delete() {
+        WebUpdate webUpdate = generateUpdateInfo();
+        assertEquals(1, webUpdateInfoMapper.delete(webUpdate.getId()));
+        assertTrue(webUpdateInfoMapper.findById(webUpdate.getId()).isDelete());
+    }
+
+    @Test
+    public void update() {
+        WebUpdate webUpdate = generateUpdateInfo();
+        assertEquals(1, webUpdateInfoMapper.update(webUpdate.getId(), randomStr(6)));
+    }
+
+    @Test
+    public void existsById() {
+        WebUpdate webUpdate = generateUpdateInfo();
+        assertTrue(webUpdateInfoMapper.existsById(webUpdate.getId()));
+    }
+
+    @Test
+    public void findById() {
+        WebUpdate webUpdate = generateUpdateInfo();
+        WebUpdate byId = webUpdateInfoMapper.findById(webUpdate.getId());
+        assertEquals(webUpdate.getUpdateInfo(), byId.getUpdateInfo());
+        assertEquals(webUpdate.getId(), byId.getId());
+    }
+
+    @Test
+    public void findAll() {
+        List<WebUpdate> all = webUpdateInfoMapper.findAll();
+        assertNotEquals(0, all.size());
+    }
+
+    @Test
+    public void findAllNotDeleted() {
+        this.delete();
+        List<WebUpdate> allNotDeleted = webUpdateInfoMapper.findAllNotDeleted();
+        allNotDeleted.forEach(webUpdate -> assertFalse(webUpdate.isDelete()));
+    }
+
+    @Test
+    public void getLastestOne() {
+        WebUpdate webUpdate = generateUpdateInfo();
+        List<WebUpdate> all = webUpdateInfoMapper.findAll();
+        List<WebUpdate> allNotDeleted = webUpdateInfoMapper.findAllNotDeleted();
+        all.sort(((o1, o2) -> (int) (o2.getId() - o1.getId())));
+        allNotDeleted.sort(((o1, o2) -> (int) (o2.getId() - o1.getId())));
+        assertEquals(webUpdate.getId(), all.get(0).getId());
+        assertEquals(webUpdate.getId(), allNotDeleted.get(0).getId());
+        assertEquals(webUpdate.getId(), webUpdateInfoMapper.getLastestOne().getId());
+    }
+
+    private WebUpdate generateUpdateInfo() {
+        WebUpdate webUpdate = new WebUpdate(randomStr(8));
+        webUpdateInfoMapper.insert(webUpdate);
+        return webUpdate;
+    }
+}
\ No newline at end of file