An Electro-hydrolic Acutator (EHA) test stand is developed for servo straight drive pump control hydraulic system. The integrated design of the data testing and data acquisition system of the test bench was carried out. The composition, technical requirements, working principle, function and control system of the test bench were studied. The test bench is a Direct Drive Volume Control (DDVC) system test bench in design idea, which can achieve the same test to complete the purpose of multiple tests, and has a good generalization value.