The invention relates to an automatic testing apparatus of an SVG power module. The automatic testing apparatus comprising a monitoring background, a main control unit, an adjustable direct-current power supply, and a power module waveform detection unit is capable of carrying out at least two of the following tests: a communication test, a power module pre-checking test, a module input value precision test, a bus over-voltage protection test, a temperature protection test, and a waveform test. The main control unit executes a corresponding instruction, receives a corresponding signal fed back by a tested power module, carries out comparison with a corresponding set value, and determines whether the corresponding function of the power module meets the standard; and when a condition for a next test is met, a next test is carried out automatically. With the automatic testing apparatus, several kinds of tests can be realized; building of different test circuits can be avoided; and the test complexity can be reduced. Moreover, the test precision can be improved; and the investment cost can be lowered.