The utility model relates to an improved structure of an inhalation and exhalation separation mask, which is applied to a human face and a nose and a mouth thereof. The mask comprises: an outer layer body, wherein at least one first through hole is arranged in the upper and lower sections, and a first through hole is arranged in the lower part a front hole； an inner layer body disposed on the inner side of the outer layer body； at least one second through hole is disposed in the upper and lower portions, and a second front hole is disposed in a center of the lower portion, and at least one fixing member is disposed on both sides of the outer layer body An inner cover is disposed on the inner side of the inner layer body to provide the cover, and is provided with at least one third through hole and a connecting portion； at least two air valves are disposed on the outer layer body and the upper portion of the inner layer body a first through hole, the second through hole, and the first through hole corresponding to the outer layer body, the lower portion of the inner layer body, the second through hole and the third through hole of the inner cover； The connecting portion of the cover is provided with a cover body； thereby, the outer layer body and the inner layer body and the inner cover provided with the air valve are used to exhale the air inhaled by the nose and the exhaled gas and the mouth Gas separation.一種吸氣與呼氣分離口罩改良結構，係應用於人臉及其鼻與嘴，該口罩，包括︰一外層體，其上、下段設有至少一第一透孔，其下段中央設有一第一前孔；一內層體，設於該外層體內側，其上、下段設有至少一第二透孔，其下段中央設有一第二前孔，該外層體兩側設有至少一固定件；一內罩，設於該內層體內側提供罩合該嘴，其設有至少一第三透孔及一連接部；至少二氣閥，設於該外層體、該內層體上段之該第一透孔、該第二透孔，及設於對應位於該外層體、該內層體下段之該第一透孔、該第二透孔與該內罩之該第三透孔；該內罩之該連接部設有一蓋體；藉此，透過設有該氣閥之該外層體與該內層體及該內罩，使該人臉之該鼻吸入之空氣與呼出氣體及該嘴呼出氣體分離。
