Gas pressure control method, system and equipment for beauty instrument

The invention discloses a gas pressure control method, system and equipment for a beauty instrument, and the method comprises the steps: collecting the pressure data of a gas tank of the beauty instrument after an air pump works; detecting whether the pressure in the gas tank is within the range of the highest threshold value or the lowest threshold value; if the actually-measured pressure is within the threshold value, the machine operates normally, the air pump continues to maintain the state, and if the actually-measured pressure is larger than the maximum threshold value or smaller than the minimum threshold value, the first-order derivative of the pressure in the air tank is further calculated; judging the first derivative f (P) of the pressure, further judging the change trend of the pressure in the gas tank, and controlling the start and stop of the gas pump according to the change trend of the pressure. The precise control range of the working pressure is set according to the pressure threshold range,