diff --git a/SUMMARY.md b/SUMMARY.md
index 15459ba..99b7892 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -32,7 +32,15 @@
    * [3.7. Go核心对象结构(TODO)](ch3-asm/ch3-07-core-type.md)
    * [3.8. runtime内置函数(TODO)](ch3-asm/ch3-08-runtime-func.md)
    * [3.9. 补充说明(TODO)](ch3-asm/ch3-09-faq.md)
-* [第四章 RPC(TODO)](ch4-rpc/readme.md)
+* [第四章 RPC和Protobuf(TODO)](ch4-rpc/readme.md)
+   * [4.1. RPC入门(TODO)](ch4-rpc/ch4-01-rpc-intro.md)
+   * [4.2. Protobuf简介(TODO)](ch4-rpc/ch4-02-pb-intro.md)
+   * [4.3. protorpc(TODO)](ch4-rpc/ch4-03-protorpc.md)
+   * [4.4. grpc(TODO)](ch4-rpc/ch4-04-grpc.md)
+   * [4.5. 反向rpc(TODO)](ch4-rpc/ch4-05-reverse-rpc.md)
+   * [4.6. Protobuf扩展(TODO)](ch4-rpc/ch4-06-pb-option.md)
+   * [4.7. 基于pb的rpc定制(TODO)](ch4-rpc/ch4-07-pb-rpc.md)
+   * [4.8. 补充说明(TODO)](ch4-rpc/ch4-08-faq.md)
 * [第五章 这是一个坑(TODO)](ch5-wtf/readme.md)
 * [第六章 Go和Web](ch6-web/readme.md)
    * [6.1. Web开发简介](ch6-web/ch6-01-introduction.md)