Sputum aspirator with purification function

The invention discloses a sputum aspirator with a purification function, and relates to the technical field of sputum aspiration appliances, the sputum aspirator comprises a pistol-shaped handheld seat and a purification pipe fixed at the top of the handheld seat, one end of the purification pipe is closed, a connecting pipe is arranged on one end face of the purification pipe in a penetrating manner, one end of the connecting pipe is connected with a mounting seat, and a sputum collection bottle is mounted at the bottom of the mounting seat; a suction pipe is arranged on one side in the mounting seat, an exhaust pipe is arranged on the other side in the mounting seat, and an exhaust mechanism is arranged in the purification pipe; a one-way liquid inlet valve is arranged at the bottom end of the suction pipe; through cooperation of the mounting base, the sputum collection bottle and the exhaust mechanism, sputum in the throat of a patient can be rapidly sucked out when sputum suction operation is conducted on