Waste gas collecting and filtering device for anaesthetic mask

The utility model discloses a waste gas collecting and filtering device for an anaesthetic mask. The waste gas collecting and filtering device comprises a mask body and a filtering and collecting device, an oxygen inlet and outlet valve, a breathing type anesthesia inlet valve, an air inlet valve and an inhalation valve are arranged on the mask body; an air filter element is detachably arranged on the air inlet valve; a small-sized air extracting pump is arranged on the filtering and collecting device, an air extracting pipe body is arranged on the small-sized air extracting pump, and the air extracting pipe body is detachably connected with the air sucking valve. The mask is novel in structure and unique in design, a worker uses the controller, redundant anesthetic objects in the mask body are pumped into the filtering and collecting device, and the safety of the environment in an operating room is guaranteed; air exhaled by a patient cannot be reserved in the mask body and can be exhausted through the air o