A kind of hydraulic pump test bench for evaluating the performance of hydraulic oil was designed,the main function requirements and performance indicators of the test bench were described.The design composition and working principle of the hydraulic system of the test bench were introduced,and the important components of the system and their power recovery rate were calculated.The mathematical derivation and modeling for the loading system of the test bench were carried out,and its dynamic performance was analyzed by using MATLAB software simulation.The results show that the test bench has good loading characteristics and can meet the requirements of working conditions for hydraulic oil performance testing.