The test system for bell-type gas flow calibration facilities (hereinafter referred to as the test system) is based on a bell-type gas flow calibration facility. The software system was developed using Access database based on Visual Studio2005. The test system uses a three-tier architecture (interface tier, middle tier, and the database layer), and it is flexible, scalable and easy to use. The software integrates machinery control, automatic measurement, data acquisition, in-situ data records, and certificate printing, and greatly reduces the intensity of verification and improves the work efficiency.