diff --git a/docs/system-design/framework/spring/Spring事务总结.md b/docs/system-design/framework/spring/Spring事务总结.md
index 95043049..618e600e 100644
--- a/docs/system-design/framework/spring/Spring事务总结.md
+++ b/docs/system-design/framework/spring/Spring事务总结.md
@@ -681,10 +681,17 @@ private void method1() {
 
 ## 4. Reference
 
-3. [总结]Spring 事务管理中@Transactional 的参数:[http://www.mobabel.net/spring 事务管理中 transactional 的参数/](http://www.mobabel.net/spring事务管理中transactional的参数/)
-4. Spring 官方文档：[https://docs.spring.io/spring/docs/4.2.x/spring-framework-reference/html/transaction.html](https://docs.spring.io/spring/docs/4.2.x/spring-framework-reference/html/transaction.html)
-5. 《Spring5 高级编程》
-6. 透彻的掌握 Spring 中@transactional 的使用: [https://www.ibm.com/developerworks/cn/java/j-master-spring-transactional-use/index.html](https://www.ibm.com/developerworks/cn/java/j-master-spring-transactional-use/index.html)
-7. Spring 事务的传播特性：[https://github.com/love-somnus/Spring/wiki/Spring 事务的传播特性](https://github.com/love-somnus/Spring/wiki/Spring事务的传播特性)
-8. [Spring 事务传播行为详解](https://segmentfault.com/a/1190000013341344) ：[https://segmentfault.com/a/1190000013341344](https://segmentfault.com/a/1190000013341344)
-9. 全面分析 Spring 的编程式事务管理及声明式事务管理：[https://www.ibm.com/developerworks/cn/education/opensource/os-cn-spring-trans/index.html](https://www.ibm.com/developerworks/cn/education/opensource/os-cn-spring-trans/index.html)
+1. [总结]Spring 事务管理中@Transactional 的参数:[http://www.mobabel.net/spring 事务管理中 transactional 的参数/](http://www.mobabel.net/spring事务管理中transactional的参数/)
+
+2. Spring 官方文档：[https://docs.spring.io/spring/docs/4.2.x/spring-framework-reference/html/transaction.html](https://docs.spring.io/spring/docs/4.2.x/spring-framework-reference/html/transaction.html)
+
+3. 《Spring5 高级编程》
+
+4. 透彻的掌握 Spring 中@transactional 的使用: [https://www.ibm.com/developerworks/cn/java/j-master-spring-transactional-use/index.html](https://www.ibm.com/developerworks/cn/java/j-master-spring-transactional-use/index.html)
+
+5. Spring 事务的传播特性：[https://github.com/love-somnus/Spring/wiki/Spring 事务的传播特性](https://github.com/love-somnus/Spring/wiki/Spring事务的传播特性)
+
+6. [Spring 事务传播行为详解](https://segmentfault.com/a/1190000013341344) ：[https://segmentfault.com/a/1190000013341344](https://segmentfault.com/a/1190000013341344)
+
+7. 全面分析 Spring 的编程式事务管理及声明式事务管理：[https://www.ibm.com/developerworks/cn/education/opensource/os-cn-spring-trans/index.html](https://www.ibm.com/developerworks/cn/education/opensource/os-cn-spring-trans/index.html)
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