A test machine on friction and wear for connecting rod bushing of IC engine was designed and built，which was composed of swing mechanism,hydraulic stroker,data acquisition and PC control system.Pendulum motion of connecting rod bushing was driven by frequency control motor in swing mechanism.Driving load source was supplied by the hydraulic stroker.Controllable load excitation was achieved by PC through changing frequency and duty ratio of PWM.Operation speed and load excitation of the test machine could be adjusted in wide range,and collection,analysis and storage of test signals could be performed automatically.The test machine can be applied to approach the friction and wear for connecting rod bushing of IC engine in the different size and work condition.