Since the test bed of big hydraulic cylinder needs high pressure and greater flow rate, the hydraulic cylinder test bed based on cartridge valves was designed according to the test standard of hydraulic cylinder and the deficiency of the existing hydraulic cylinder test bed in this paper. It have been proposed that the system of loading hydraulic cylinder and system of test hydraulic cylinder by using the same hydraulic source, so did the system with high pressure and greatflow rate in parallel which could reduce the motors and hydraulic pump. Therefore, the hydraulic cylinder test bed could be obtained which has some characteristics such as higher automation, lower product costing and energy saving.