diff --git a/tools/travis-scripts/before-install.sh b/tools/travis-scripts/before-install.sh
index 4a03013c0a..0a33175825 100755
--- a/tools/travis-scripts/before-install.sh
+++ b/tools/travis-scripts/before-install.sh
@@ -72,6 +72,10 @@ elif [ "$PLATFORM"x = "emscripten"x ]; then
 
     install_android_ndk
 elif [ "$PLATFORM"x = "mac-ios"x ]; then
+    if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then
+        exit 0
+    fi
+
     if [ "$PUSH_TO_MAC"x = "YES"x ]; then
         cd $COCOS2DX_ROOT
         git config user.email ${GH_EMAIL_MAC}
diff --git a/tools/travis-scripts/run-script.sh b/tools/travis-scripts/run-script.sh
index 0e84e3f0a2..7bf326dc33 100755
--- a/tools/travis-scripts/run-script.sh
+++ b/tools/travis-scripts/run-script.sh
@@ -113,6 +113,10 @@ elif [ "$PLATFORM"x = "emscripten"x ]; then
     export LLVM_ROOT=$LLVM
     EMCC_DEBUG=1 make PLATFORM=emscripten -j 8
 elif [ "$PLATFORM"x = "mac-ios"x ]; then
+    if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then
+        exit 0
+    fi
+
     if [ "$PUSH_TO_MAC"x != "YES"x ]; then
         cd $COCOS2DX_ROOT/tools/travis-scripts
         ./generate-bindings.sh