A micro pneumatic power device comprises a micro fluid control device and a micro valve device, wherein the micro fluid control device comprises a gas inlet plate, a resonator, a piezoelectric actuator and a gas collection plate which are arranged in a stacked mode; the length of the gas collection plate is 6-18 mm, and the width of the gas collection plate is 6-18 mm; a first cavity is formed by a gap between the resonator and the piezoelectric actuator, when the piezoelectric actuator is under driven, gas is led in through the gas inlet plate, passes through the resonator to enter the first cavity and then is transferred downwards, and thus gas is continuously pushed out through a pressure gradient flow channel; the micro valve device comprises a valve disk and an outlet plate which are arranged in a stacked mode; and when gas is transferred from the micro fluid control device into the micro valve device downwards, a valve port of the valve disk is opened or closed through one-way flowing of the gas, and thus pressure increasing and pressure relieving are achieved.