Solenoid valve is a key part in automatic transmission, and the performance testing is an essential step in product development. Different types of solenoid valves have different test conditions and performance parameters. In order to meet the test requirements of proportional solenoid valve and on-off solenoid valve for automatic transmission, a modular design performance test bed was introduced, including hydraulic system composition, design and selection, temperature control system and measurement & control system design. The results show that the test bed can be used to test the dynamic response, flow rate and sealing performance of specific solenoid valve.It provides reference for the product design of automatic transmission solenoid valve.