diff --git a/README.md b/README.md
index 01dac67a..9dd50e3f 100644
--- a/README.md
+++ b/README.md
@@ -60,6 +60,17 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fcoroutines")
 
 set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fno-tree-slp-vectorize")
 
+## cinatra指令集功能使用
+
+cinatra支持通过指令集优化其内部逻辑，其通过宏来控制是否使用指令集。使用之前请确保cpu支持。
+
+使用如下命令即可编译带simd优化的cinatra。注意只能开启一种simd指令集优化,开启多个会导致编译失败。
+
+```shell
+cmake -DENABLE_SIMD=SSE42 .. # 启用sse4.2指令集
+cmake -DENABLE_SIMD=AVX2 .. # 启用avx2指令集
+```
+
 # 快速示例
 
 ## 示例1：一个简单的hello world
diff --git a/lang/english/README.md b/lang/english/README.md
index 83f248f1..dc2146a0 100644
--- a/lang/english/README.md
+++ b/lang/english/README.md
@@ -44,6 +44,17 @@ set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fno-tree-slp-vectorize"
 
 1. C++20 compiler (gcc 10.2, clang 13, Visual Studio 2022, or later versions)
 
+## Usage:cinatra instruction set optimization
+
+cinatra supports optimizing its internal logic through the instruction set, which controls whether to use the instruction set through macros. Please make sure the cpu support before use.
+
+Use the following command to compile cinatra with simd optimization.Note that only one simd instruction set can be opened, and opening multiple instruction sets will cause compilation failure.
+
+```shell
+cmake -DENABLE_SIMD=SSE42 .. # enable sse4.2 instruction set
+cmake -DENABLE_SIMD=AVX2 .. # enable avx2 instruction set
+```
+
 ## Examples
 
 ### Example 1: A simple "Hello World"