diff --git a/src/guide/ormusagetips.md b/src/guide/ormusagetips.md
index 4a4a3857a9c2aa0e9e2c7f0f745bab703cbb5a86..c5b7f8b9a5e0e33daa57d2e22b2b9fb24071a9b6 100644
--- a/src/guide/ormusagetips.md
+++ b/src/guide/ormusagetips.md
@@ -46,13 +46,30 @@ protected EntityManager entityManager;
com.warm.flow.orm.entity.FlowUser
```
-#### 使用示例
+### 以下为主要接口示例,更多接口请参考 EntityManager 接口
```java
@PersistenceContext(unitName = "warm-flow-jpa")
protected EntityManager entityManager;
-entityManager.find
+FlowDefinition entity = dao.newEntity();
+// entity 字段填充
+// 持久化保存数据
+entityManager.persist(entity);
+
+// 通过主键查找数据
+FlowDefinition existEntity = entityManager.find(FlowDefinition.class, 1l);
+
+// 复杂查询语句通过 CriteriaQuery criteriaQuery
+CriteriaQuery criteriaQuery = ...
+// select语句获取结果
+entityManager.createQuery(criteriaQuery).getResultList();
+
+// 更新操作使用 CriteriaUpdate criteriaUpdate
+CriteriaUpdate criteriaUpdate = ...
+entityManager.createQuery(criteriaUpdate).executeUpdate()
```
+### **JPA注意事项** JPA涉及持久化操作必须开启事务 @Transactional(spring) @Tran(solon)
+
## mybatis-flex