diff --git a/source__build_carla.md b/source__build_carla.md
index 4e6f3cb..ac29dd3 100644
--- a/source__build_carla.md
+++ b/source__build_carla.md
@@ -149,14 +149,15 @@ clone最新的就行，不用切换分支。
    cd carla/root
    mkdir build # 名字自定义
    cd build
-   cmake .. \
-       -G "Ninja" \
-       -DCMAKE_BUILD_TYPE=Client \
-       -DLIBCARLA_BUILD_RELEASE=ON \ 
-       -DLIBCARLA_BUILD_DEBUG=OFF \
-       -DLIBCARLA_BUILD_TEST=OFF \
-       -DCMAKE_TOOLCHAIN_FILE=./Examples/CppClient/ToolChain.cmake \
-       -DCMAKE_INSTALL_PREFIX=./ 
+   cmake \
+    -G "Ninja" \
+    -DCMAKE_BUILD_TYPE=Client \
+    -DLIBCARLA_BUILD_RELEASE=ON \
+    -DLIBCARLA_BUILD_DEBUG=OFF \
+    -DLIBCARLA_BUILD_TEST=OFF \
+    -DCMAKE_TOOLCHAIN_FILE=../Examples/CppClient/ToolChain.cmake  \
+    -DCMAKE_INSTALL_PREFIX=../carlalib \
+    ..
    # 说明
    # -DCMAKE_INSTALL_PREFIX 编译好后，库文件和头文件的安装目录   自由指定
    #  -DLIBCARLA_BUILD_RELEASE=ON  -DLIBCARLA_BUILD_DEBUG=OFF  指定编译模式