diff --git a/spring-boot-demo-orm-mybatis-mapper-page/README.md b/spring-boot-demo-orm-mybatis-mapper-page/README.md
index 3b8cf84..ee3dcb7 100644
--- a/spring-boot-demo-orm-mybatis-mapper-page/README.md
+++ b/spring-boot-demo-orm-mybatis-mapper-page/README.md
@@ -271,7 +271,17 @@ public class UserMapperTest extends SpringBootDemoOrmMybatisMapperPageApplicatio
     }
 
     /**
-     * 测试通用Mapper - 查询
+     * 测试通用Mapper - 查询单个
+     */
+    @Test
+    public void testQueryOne(){
+        User user = userMapper.selectByPrimaryKey(1L);
+        Assert.assertNotNull(user);
+        log.debug("【user】= {}", user);
+    }
+
+    /**
+     * 测试通用Mapper - 查询全部
      */
     @Test
     public void testQueryAll() {
diff --git a/spring-boot-demo-orm-mybatis-mapper-page/src/test/java/com/xkcoding/orm/mybatis/MapperAndPage/mapper/UserMapperTest.java b/spring-boot-demo-orm-mybatis-mapper-page/src/test/java/com/xkcoding/orm/mybatis/MapperAndPage/mapper/UserMapperTest.java
index ae4815d..409616a 100644
--- a/spring-boot-demo-orm-mybatis-mapper-page/src/test/java/com/xkcoding/orm/mybatis/MapperAndPage/mapper/UserMapperTest.java
+++ b/spring-boot-demo-orm-mybatis-mapper-page/src/test/java/com/xkcoding/orm/mybatis/MapperAndPage/mapper/UserMapperTest.java
@@ -95,7 +95,17 @@ public class UserMapperTest extends SpringBootDemoOrmMybatisMapperPageApplicatio
     }
 
     /**
-     * 测试通用Mapper - 查询
+     * 测试通用Mapper - 查询单个
+     */
+    @Test
+    public void testQueryOne(){
+        User user = userMapper.selectByPrimaryKey(1L);
+        Assert.assertNotNull(user);
+        log.debug("【user】= {}", user);
+    }
+
+    /**
+     * 测试通用Mapper - 查询全部
      */
     @Test
     public void testQueryAll() {