The utility model discloses a leakage protector tester which comprises a detected voltage output end for determining detected voltage; and a detected current output end for outputting simulated leakage current, wherein the detected current output end is controlled by a control and measurement circuit; a control signal is transferred to a control panel through the control and measurement circuit, and a test value is displayed through a display and is regulated through a control key; the test value is input to the control and measurement circuit through the control panel, and then the test current is output by the detected current output end to test.