diff --git a/build_for_android.sh b/build_for_android.sh
index 8311df2f..7c594a81 100755
--- a/build_for_android.sh
+++ b/build_for_android.sh
@@ -7,8 +7,8 @@ cd $path
 cd ..
 git clone --depth=50 https://github.com/xiongziliang/ZLMediaKit.git
 cd ZLMediaKit
-mkdir -p build
-cd build
+mkdir -p android_build
+cd android_build
 cmake .. -DCMAKE_TOOLCHAIN_FILE=../cmake/android.toolchain.cmake -DANDROID_NDK=$ANDROID_NDK_ROOT  -DCMAKE_BUILD_TYPE=Release  -DANDROID_ABI="armeabi" -DANDROID_NATIVE_API_LEVEL=android-9
 make -j4
 sudo make install
diff --git a/build_for_ios.sh b/build_for_ios.sh
index bd631044..787353ad 100755
--- a/build_for_ios.sh
+++ b/build_for_ios.sh
@@ -7,8 +7,8 @@ cd $path
 cd ..
 git clone --depth=50 https://github.com/xiongziliang/ZLMediaKit.git
 cd ZLMediaKit
-mkdir -p build
-cd build
+mkdir -p ios_build
+cd ios_build
 cmake .. -DCMAKE_TOOLCHAIN_FILE=../cmake/iOS.cmake -DIOS_PLATFORM=OS
 make -j4
 sudo make install
diff --git a/build_for_linux.sh b/build_for_linux.sh
index 2182df2c..c93cf5d2 100755
--- a/build_for_linux.sh
+++ b/build_for_linux.sh
@@ -13,8 +13,8 @@ cd $path
 cd ..
 git clone --depth=50 https://github.com/xiongziliang/ZLMediaKit.git
 cd ZLMediaKit
-mkdir -p build
-cd build
+mkdir -p linux_build
+cd linux_build
 cmake ..
 make -j4
 sudo make install
diff --git a/build_for_mac.sh b/build_for_mac.sh
index d4aa7d02..cc466f81 100755
--- a/build_for_mac.sh
+++ b/build_for_mac.sh
@@ -12,8 +12,8 @@ cd $path
 cd ..
 git clone --depth=50 https://github.com/xiongziliang/ZLMediaKit.git
 cd ZLMediaKit
-mkdir -p build
-cd build
+mkdir -p mac_build
+cd mac_build
 cmake .. -DOPENSSL_ROOT_DIR=/usr/local/Cellar/openssl/1.0.2j/
 make -j4
 sudo make install