diff --git a/appveyor.yml b/appveyor.yml
index 2a09eb10..61df6ea2 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -16,18 +16,20 @@ environment:
   VNPY_TEST_POSTGRESQL_PASSWORD: Password12!
   MYSQL_PWD: Password12!
 
-before_build:
-  - ps: psql -d "postgresql://$ENV:VNPY_TEST_POSTGRESQL_USER:$ENV:VNPY_TEST_POSTGRESQL_PASSWORD@localhost" -c "create database vnpy;"
-  - ps: . "C:\Program Files\MySQL\MySQL Server 5.7\bin\mysql" -u $ENV:VNPY_TEST_MYSQL_USER -e 'CREATE DATABASE vnpy;'
+install:
   - python -m pip install --upgrade pip wheel setuptools
 
-install:
+build_script:
   - pip install psycopg2 mongoengine pymysql  # we should support all database in test environment
   - pip install https://pip.vnpy.com/colletion/TA_Lib-0.4.17-cp37-cp37m-win_amd64.whl
   - pip install https://pip.vnpy.com/colletion/ibapi-9.75.1-001-py3-none-any.whl
   - pip install -r requirements.txt
   - pip install .
 
+before_test:
+  - ps: psql -d "postgresql://$ENV:VNPY_TEST_POSTGRESQL_USER:$ENV:VNPY_TEST_POSTGRESQL_PASSWORD@localhost" -c "create database vnpy;"
+  - ps: . "C:\Program Files\MySQL\MySQL Server 5.7\bin\mysql" -u $ENV:VNPY_TEST_MYSQL_USER -e 'CREATE DATABASE vnpy;'
+
 test_script:
   - cd tests; source travis_env.sh;
   - python test_all.py