diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000000000000000000000000000000000000..69cd7c720dffc742458dba0bb432794b160026e4
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,14 @@
+language: python
+
+python:
+  - '2.7'
+  - '3.5'
+  - '3.6'
+
+script:
+  - if [[ $TRAVIS_PYTHON_VERSION != 2.7 ]]; then /bin/bash ./scripts/check_code_style.sh; fi
+
+notifications:
+  email:
+    on_success: change
+    on_failure: always
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8664da7d29c45f04abbefe4cd2050e768f139821
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+pre-commit
+yapf == 0.28.0
diff --git a/scripts/check_code_style.sh b/scripts/check_code_style.sh
new file mode 100644
index 0000000000000000000000000000000000000000..481d5ad1c96096914a2888ef0f3904638e40919b
--- /dev/null
+++ b/scripts/check_code_style.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+function abort(){
+    echo "Your change doesn't follow X2Paddle's code style." 1>&2
+    echo "Please use pre-commit to check what is wrong." 1>&2
+    exit 1
+}
+
+trap 'abort' 0
+set -e
+
+cd $TRAVIS_BUILD_DIR
+export PATH=/usr/bin:$PATH
+pre-commit install
+
+if ! pre-commit run -a ; then
+    git diff
+    exit 1
+fi
+
+trap : 0