Micro air pump

The utility model discloses a micro air pump, micro air pump includes: the pump body, the pump body include upper cover and disk seat, and disk seat disposed on upper cover below is provided with air outlet channel on the disk seat, the upper cover with it covers the blast pipe that is provided with and exhausts the chamber intercommunication on, to be formed with the exhaust chamber between the disk seat, the base subassembly of disposed on disk seat below is formed with the gas storage chamber in the base subassembly, the gas storage chamber is outside through the inlet structure intercommunication base subassembly that is provided on the base subassembly, the piston diaphragm inside the piston diaphragm disposed on base subassembly, is formed with a plurality of recessed deeps that add downwards on the piston diaphragm, prescribe a limit to a piston chamber in adding the deep, is provided with the inlet channel who is used for feeding through piston chamber and gas storage chamber on the piston diaphragm, the intake leaf of the inlet channel that is provided department and the valve block of giving vent to anger of air outlet channel department that is provided, wherein, the volume in exhaust chamber is V, and volume V satisfies the relational expression: 4cc