We have successfully developed container, valve, pipe fittings test stand for the urgent need of high-pressure air-tightness test device in domestic fields, especially in aviation field. This kind of test equipment based on industrial computer and PLC control can detect the airtightness of various containers, valves and pipe fittings with different volume and detection pressure, and realize automatic detection, it can quickly and accurately achieve the preset detection pressure value, effectively improve the detection efficiency, accuracy, and shorten the detection time. The airtight test pressure of the test stand can reach up to 35 MPa, which can fully meet the requirements of airtight high pressure and high precision in aviation and automobile fields.