The powder mist inhaler is a capsule-type powder mist inhalation drug delivery device, which includes a nozzle cover, a nozzle and a chassis. Medicine capsule slot, elastic reset pricking capsule button, pricking needle through hole, medicine capsule slot, medicine capsule slot cover plate, rotating shaft, bayonet pin, bayonet pin hole, chassis bayonet slot, etc., the mouth suction nozzle is screwed through the mouth suction nozzle Connected with the chassis, a part of the drug bag groove is in the shape of a half-side capsule longitudinally connected to and communicated with the screen and the base of the airflow channel. There are two penetrating pricking needle holes on the longitudinal axis of the groove surface, and the drug bag groove is another One part is in the shape of a half-capsule and longitudinally arranged in the center of the cover plate of the drug bag slot. The two parts of the drug bag slot overlap to form a complete capsule model. On or off on the chassis. The utility model has the characteristics of simple structure, good effect of inhalation and administration, and convenient cleaning.