A kind of mask, it includes a cover, at least one first fan, at least one second fan and a filter disc. There is cover an at least air inlet hole and an at least exhaust vent, air inlet hole and exhaust vent to penetrate cover. First fan is arranged on what cover, and corresponding what air inlet hole. Second fan is arranged on what cover, and corresponding what exhaust vent. Filter disc is arranged on what cover, and at least part of filter disc and air inlet hole overlap.一種面罩，其包含一罩體、至少一第一風扇、至少一第二風扇和一濾片。罩體具有至少一進風孔和至少一出風孔，進風孔和出風孔穿透罩體。第一風扇設置於罩體上，並且對應於進風孔。第二風扇設置於罩體上，並且對應於出風孔。濾片設置於罩體上，且至少部分的濾片和進風孔相重疊。
