In order to test the performance of hydraulic pumps and hydraulic motors,a new type of pump/ motor integrated test rig for mine was developed.The structure,test scheme and working principle of the test rig were introduced,the performance indexes of A11VO145 variable pump were tested,the relevant test data and curve were obtained by the computer automatic acquisition and processing，and the test results were analyzed.Practice shows that the test rig can complete all the performance test of pump/motor,which has achieved the goal of the test rig design.