A respirator mask device includes a frame unit, a mask shell connected pivotally to the frame unit, a mask cushion secured to the mask shell, an adjusting unit operable for adjusting relative position between an upper end of the mask shell and the frame unit, two connecting pieces disposed respectively on left and right sides of a lower end of the frame unit and connected pivotally to the mask shell, two first engaging members disposed respectively on the left and right sides of the lower end of the extension frame, and a head strip unit. The head strap unit includes a strap body, and two second engaging members disposed on the strap body and connected respectively and removably to the first engaging members.一種呼吸面罩包含一支架單元、一面罩單元、一調整單元、一連接單元及一頭帶單元,支架單元包括一額頭固定架及一延伸架,面罩單元包括一罩框及一面罩墊,調整單元包括一設於罩框上端的調整片及一設於延伸架的插銷,連接單元包括一位於延伸架左右兩側下方的樞接部、一位於罩框左右兩側下方的樞接桿,及一位於延伸架左右兩側下方的扣座,頭帶單元包括一帶體及一扣件,連接單元能夠同時達到樞接支架單元與面罩單元、連接頭帶單元與支架單元的雙重目的,且連接單元的位置能維持頭帶單元適當鬆緊度,達到使用便利且外觀簡潔的功效。1‧‧‧支架單元11‧‧‧額頭固定架12‧‧‧延伸架2‧‧‧面罩單元21‧‧‧罩框22‧‧‧面罩墊3‧‧‧調整單元31‧‧‧調整片32‧‧‧調整孔33‧‧‧插銷34‧‧‧滑軌35‧‧‧滑塊4‧‧‧連接單元41‧‧‧樞接部42‧‧‧樞接桿43‧‧‧扣座44‧‧‧卡孔45‧‧‧防脫落凸緣5‧‧‧頭帶單元51‧‧‧帶體52‧‧‧扣件521‧‧‧壓抵彈片522‧‧‧卡塊
