diff --git a/build_for_android.sh b/build_for_android.sh
index e669cfe8..f6fca1b5 100755
--- a/build_for_android.sh
+++ b/build_for_android.sh
@@ -1,8 +1,6 @@
 #!/bin/bash
-path=`pwd`
 cd ..
 git clone --depth=1 https://github.com/xiongziliang/ZLMediaKit.git
-cd $path
 cd ZLMediaKit
 git submodule init
 git submodule update
diff --git a/build_for_ios.sh b/build_for_ios.sh
index 3e58e8c9..c7bf929b 100755
--- a/build_for_ios.sh
+++ b/build_for_ios.sh
@@ -1,8 +1,6 @@
 #!/bin/bash
-path=`pwd`
 cd ..
 git clone --depth=1 https://github.com/xiongziliang/ZLMediaKit.git
-cd $path
 cd ZLMediaKit
 git submodule init
 git submodule update
diff --git a/build_for_linux.sh b/build_for_linux.sh
index 0feb3f43..2a510c59 100755
--- a/build_for_linux.sh
+++ b/build_for_linux.sh
@@ -1,8 +1,6 @@
 #!/bin/bash
-path=`pwd`
 cd ..
 git clone --depth=1 https://github.com/xiongziliang/ZLMediaKit.git
-cd $path
 cd ZLMediaKit
 git submodule init
 git submodule update
diff --git a/build_for_mac.sh b/build_for_mac.sh
index 8f5e0003..60828d2d 100755
--- a/build_for_mac.sh
+++ b/build_for_mac.sh
@@ -1,8 +1,6 @@
 #!/bin/bash
-path=`pwd`
 cd ..
 git clone --depth=1 https://github.com/xiongziliang/ZLMediaKit.git
-cd $path
 cd ZLMediaKit
 git submodule init
 git submodule update