diff --git a/README.md b/README.md
index 17beeb0..2a2924d 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ T-L-V layout
 // head(8(id)+1(ok)+8(length)=17)
 ```
 
-## qps benchmark-  remote_method(i32)->i32
+## qps benchmark-  remote_method(i32)->i32 [code](https://github.com/darkrpc/bench_rpc)
 | Framework   | Platform(1-server-1-client) |  ns/operation（lower is better） | Qps(higher is better) |
 |-------------|-----------------------------|------ |------ |
 | drpc/tokio  | AMD 5950x-16 CPU, 32G mem   |  49213 ns/op   |  20317 QPS/s  |