According to the technology requirements and detection methods of the electro-hydraulic proportional valve,comprehensive performance test bed was developed for the electro-hydraulic proportional valve.The compositions of the test bench control system and hydraulic system were introduced,especially the electric drive signal part was improved designed,overlying flutter signal.The experimental results show that the test rig has advantages including high test precision,stable performance,fast disassembling,short test time,high visualization for test results,convenient query for historical data.It provides reliable testing basis and online detection methods for the development of the electro-hydraulic proportional valve.