In this paper, an aeronautic test AC power supply based on DSP is proposed. The AC power supply is able to produce the sine voltage, and its frequency and breadth value can be adjusted when the aero AC electro-equipments Work on different status. Furthermore, the seasonal aberrational voltage is produced. The power supply adopts D/A mixed control and repetitive control. The digital part realizes the high precise waveform generator and the control based on voltage virtual value. The analog part adopts the control based on current virtual value and improves the response speed. The test waveform is presented at the end of this paper.