In view of the increasing demand for power distribution of SAR satellite power controller, the number of distribution circuits has increased significantly, and the difference of power distribution between single circuits is large. The traditional test equipment is failing to meet the test demand for new power controller. The general purpose SAR satellite power distribution test system can realize the simultaneous testing for multiple and differentiated distribution loads. By mean of components matching, the system can fulfill requirements of power distribution test for different models. The general purpose test system can highly improve the testing efficiency with fewer personnel as while as equipment occupancy, improve the reliability for product testing, and reduce testing risks. It is supposed to have high application value.