diff --git a/Readme.md b/Readme.md
index 03918fe..dc4d032 100644
--- a/Readme.md
+++ b/Readme.md
@@ -27,27 +27,33 @@ Product             安全网关产品源代码主目录
 <code>git pull</code>  
 
 #### 2. 安装必要软件(UBuntu)  
-<code>sudo ./fsl-qoriq-glibc-x86_64-fsl-toolchain-aarch64-toolchain-2.4.1.sh
+<code>
+sudo ./fsl-qoriq-glibc-x86_64-fsl-toolchain-aarch64-toolchain-2.4.1.sh
 sudo apt-get -y install git u-boot-tools device-tree-compiler autoconf curl flex 
 sudo apt-get -y install automake dh-autoreconf libssl-dev openssl libpcap-dev bc
-sudo apt-get -y install python-pip qemu-utils libncurses5-dev python-crypto bison</code>  
+sudo apt-get -y install python-pip qemu-utils libncurses5-dev python-crypto bison
+</code>  
 
 #### 3. 安装 linux 内核源代码  
-<code>sudo mkdir -p /opt/fsl-kernel /opt/fsl-kernel/arm64 /opt/fsl-kernel/x86
+<code>
+sudo mkdir -p /opt/fsl-kernel /opt/fsl-kernel/arm64 /opt/fsl-kernel/x86
 sudo chmod 777 /opt/fsl-kernel -R
 cp ./vBRAS/Platform/kernel/linux-4.9.140.tar.gz /opt/fsl-kernel
 cd /opt/fsl-kernel
 tar -xvaf ./linux-4.9.140.tar.gz ./
 cp ./linux-4.9.140 ./x86
-cp ./linux-4.9.140 ./arm64</code>  
+cp ./linux-4.9.140 ./arm64
+</code>  
 
 #### 4. 设置环境变量  
 在 ~/.bashrc 文件末尾加上以下几行配置  
-<code>export HUACHENG_LINUX_KERNEL=/opt/fsl-kernel/x86/linux-4.9.140
+<code>
+export HUACHENG_LINUX_KERNEL=/opt/fsl-kernel/x86/linux-4.9.140
 export HUACHENG_ARM64_KERNEL=/opt/fsl-kernel/arm64/linux-4.9.140
 export SDKTARGETSYSROOT=/opt/fsl-qoriq/2.4.1/sysroots/aarch64-fsl-linux
 export PATH=/opt/fsl-qoriq/2.4.1/sysroots/x86_64-fslsdk-linux/usr/bin:/opt/fsl-qoriq/2.4.1/sysroots/x86_64-fslsdk-linux/usr/sbin:/opt/fsl-qoriq/2.4.1/sysroots/x86_64-fslsdk-linux/bin:/opt/fsl-qoriq/2.4.1/sysroots/x86_64-fslsdk-linux/sbin:/opt/fsl-qoriq/2.4.1/sysroots/x86_64-fslsdk-linux/usr/bin/../x86_64-fslsdk-linux/bin:/opt/fsl-qoriq/2.4.1/sysroots/x86_64-fslsdk-linux/usr/bin/aarch64-fsl-linux:/opt/fsl-qoriq/2.4.1/sysroots/x86_64-fslsdk-linux/usr/bin/aarch64-fsl-linux-musl:$PATH
-source ~/.bashrc</code>
+source ~/.bashrc
+</code>
 
 #### 5. 编译内核  
 + x64_86  
@@ -55,11 +61,15 @@ source ~/.bashrc</code>
 + arm64  
 <code>cd /opt/fsl-kernel/arm64/linux-4.9.140 && unset LDFLAS</code>		
 修改 Makefile 文件第 257、258 两行	
-<code>ARCH ?= $(SUBARCH)
-	CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%)</code>		
+<code>
+ARCH ?= $(SUBARCH)
+CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%)
+</code>		
 为  
-<code>ARCH ?= arm64
-CROSS_COMPILE ?= aarch64-fsl-linux-</code>		
+<code>
+ARCH ?= arm64
+CROSS_COMPILE ?= aarch64-fsl-linux-
+</code>		
 
 然后运行 make 命令进行编译