diff --git a/.circleci/config.yml b/.circleci/config.yml
new file mode 100644
index 00000000..fa3c5a2a
--- /dev/null
+++ b/.circleci/config.yml
@@ -0,0 +1,132 @@
+version: 2
+jobs:
+  flake8:
+    docker:
+      - image: circleci/python:3.7
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - flake8-dependencies
+      - run:
+          name: "create venv for caching"
+          command: |
+            python3 -m venv venv
+      - run:
+          name: "install flake8"
+          command: |
+            . venv/bin/activate
+            pip install flake8
+      - save_cache:
+          paths:
+            - ./venv
+          key: flake8-dependencies
+      - run:
+          name: "run flake8"
+          command: |
+            . venv/bin/activate
+            flake8
+
+  build_ctp_gcc8:
+    <<: &build_spec
+      docker:
+        - image: registry.cn-shanghai.aliyuncs.com/vnpy-ci/gcc-8-python-3.7:1.0
+        - image: circleci/postgres:latest
+          environment:
+            POSTGRES_DB: &db_name "vnpy"
+            POSTGRES_USER: "postgres"
+            POSTGRES_PASSWORD: &db_password "1234"
+        - image: circleci/mysql:latest
+          environment:
+            MYSQL_DATABASE: *db_name
+            MYSQL_ROOT_PASSWORD: *db_password
+        - image: circleci/mongo:latest
+      environment:
+        <<: &build_environment
+          VNPY_TEST_POSTGRESQL_PASSWORD: *db_password
+          VNPY_TEST_MYSQL_PASSWORD: *db_password
+          VNPY_BUILD_CTP: "1"
+          VNPY_BUILD_OES: "0"
+          # best suit for circle-ci
+          VNPY_BUILD_PARALLEL: "2"
+      steps:
+        - checkout
+        - run:
+            name: "create venv for caching"
+            command: |
+              python3 -m venv venv
+
+        - restore_cache:
+            keys:
+              - v2-dependencies-{{ checksum "requirements.txt" }}
+              # fallback to using the latest cache if no exact match is found
+              - v2-dependencies-
+
+        - run:
+            name: "showing environments"
+            command: |
+              . venv/bin/activate
+              source ci/env.sh
+              echo $PWD
+              python -V
+              pip list
+              gcc --version
+              free
+              cat /proc/cpuinfo|grep -P "(processor|cpu MHz|model name)"
+              set
+        - run:
+            name: "install some special pip packages"
+            command: |
+              . venv/bin/activate
+              source ci/env.sh
+              python -m pip --version
+              python -m pip install --upgrade pip wheel setuptools
+              python -m pip install https://pip.vnpy.com/colletion/ibapi-9.75.1-001-py3-none-any.whl
+              bash ci/gitlab_pre_install.sh
+
+        - run:
+            name: "install vnpy and its dependents"
+            command: |
+              . venv/bin/activate
+              source ci/env.sh
+              bash ./install.sh
+        - save_cache:
+            paths:
+              - ./venv
+            key: v2-dependencies-{{ checksum "requirements.txt" }}
+
+        - run:
+            name: "test"
+            command: |
+              . venv/bin/activate
+              source ci/env.sh
+              set
+              cd tests
+              python test_all.py
+  build_oes_gcc8:
+    <<: *build_spec
+    environment:
+      <<: *build_environment
+      VNPY_BUILD_CTP: "0"
+      VNPY_BUILD_OES: "1"
+  python_only:
+    <<: *build_spec
+    environment:
+      <<: *build_environment
+      VNPY_BUILD_CTP: "0"
+      VNPY_BUILD_OES: "0"
+
+workflows:
+  version: 2
+  build_ctp_gcc8:
+    jobs:
+      - build_ctp_gcc8
+  build_oes_gcc8:
+    jobs:
+      - build_oes_gcc8
+  flake8:
+    jobs:
+      - flake8
+  python_only:
+    jobs:
+      - python_only
diff --git a/setup.py b/setup.py
index b2c52b23..5f07d6cb 100644
--- a/setup.py
+++ b/setup.py
@@ -182,9 +182,10 @@ parallel = os.environ.get('VNPY_BUILD_PARALLEL', None)
 if parallel:
     if parallel == 'auto':
         parallel = os.cpu_count()
-    from ci.parallel_build_distutils import patch_distutils
+    if parallel != 'no':
+        from ci.parallel_build_distutils import patch_distutils
 
-    patch_distutils(int(parallel))
+        patch_distutils(int(parallel))
 
 setup(
     name="vnpy",