Power device testing device

The invention relates to a power device testing device. The device comprises a controller, an energy storage circuit, a power supply, a first inductance circuit, a to-be-tested power device and computer equipment, the controller is used for receiving a periodic test instruction sent by the computer equipment and controlling the to-be-tested power device to be turned off and the power supply to charge the energy storage circuit according to the test instruction; the controller is also used for stopping charging the energy storage circuit if the charging voltage of the energy storage circuit is greater than or equal to a preset voltage threshold value, controlling the energy storage circuit to charge the first inductance circuit and controlling the to-be-tested power device to be switched on; and the controller is also used for detecting the drain current of the to-be-tested power device, and if the drain current is greater than or equal to a preset current threshold value, the to-be-tested power device is cont