The invention discloses an intelligent electric operating mechanism comprehensive test device. The intelligent electric operating mechanism comprehensive test device comprises an operating platform, and a magnetic powder clutch, a speed reducer and a mounting plate which are sequentially mounted on the operating platform, wherein the mounting plate is used for fixedly mounting an electric operating mechanism to be tested, and a noise measuring instrument for testing the noise of the electric operating mechanism is arranged on the operating platform; one end of the speed reducer is in transmission connection with the magnetic powder clutch through a first coupling, the other end of the speed reducer is in transmission connection with the electric operating mechanism through a torsion transmission test device, and a torsion regulator is arranged on the magnetic powder clutch and used for setting the output torque of the magnetic powder clutch. The intelligent electric operating mechanismcomprehensive test device can complete mechanical life tests, minimum output torque, maximum output torque, noise measurement and the like which need to be performed on the electric operating mechanism of a traditional isolating switch, and has the advantages that the test workload is small, the test time is reduced by about 50%, and the labor cost is saved by about 40%.