The utility model discloses an adjusting device of aerial fog supply for electric spark cutting machining, including base, backup pad, regulation double -screw bolt, aerial fog generating device, aerial fog pipeline, the aerial fog supply mouth of pipe, aerial fog supply nozzle and mouth of pipe fixation clamp, base and two backup pad fixed connection, the backup pad be provided with lift slide, regulation double -screw bolt and two backup pads pass through lift slide sliding connection respectively, the fixed support square bar that is provided with in regulation double -screw bolt middle part, support square bar fixing connection pipe mouth fixation clamp, mouth of pipe fixation clamp with the aerial fog supply mouth of pipe inlay the connection, aerial fog supply nozzle with aerial fog supply mouth of pipe thread sealing connect, the aerial fog supply mouth of pipe with aerial fog pipeline thread sealing connect, aerial fog pipeline with aerial fog generating device sealing connection, the utility model discloses can realize the regulation of distance, height and the angle of aerial fog supply, low cost, the practicality is strong.