An auxiliary breathing apparatus featuring multiple-stage gas quantity regulation comprises a flexible gas bag, a breathing mask and a gas regulator. The flexible gas bag has a storage space for storing gas. The breathing mask has a connecting pipe, a first flexible mask body and a second flexible mask body. The connecting pipe has an inner wall formed with a gas passage. The first and second flexible mask bodies are respectively extended from an outer wall of the connecting pipe. The second flexible mask body is located inside the first flexible mask body. The gas regulator, which is connected to the flexible gas bag and the connecting pipe of the breathing mask, has a gas inlet, a gas outlet and a multiple-stage regulating unit, in which the gas inlet is communicated with the storage space of the flexible gas bag, the gas outlet is communicated with the gas passage of the connecting pipe, and the multiple-stage regulating unit is utilized to control the quantity of output gas that is formed by passing the gas of the storage space of the flexible gas bag through the gas passage of the connecting pipe.本發明的多段氣體量調節的輔助呼吸器包括一可撓氣囊、一呼吸罩及一氣體調節器。可撓氣囊具有用以儲存器體的一儲氣空間。呼吸罩具有一連接管、一第一可撓罩體及一第二可撓罩體。連接管的內壁形成一氣體通道。第一可撓罩體及第二可撓罩體係分別延伸自連接管的外壁。第二可撓罩體係位在第一可撓罩體內。氣體調節器連接可撓氣囊及呼吸罩的連接管,且具有一進氣口、一出氣口及一多段調節單元。進氣口係連通可撓氣囊的儲氣空間。出氣口連通連接管的氣體通道。多段調節單元用以控制儲氣空間內的氣體通過氣體通道的一輸出氣體量。10‧‧‧多段氣體量調節的輔助呼吸裝置11‧‧‧可撓氣囊13‧‧‧呼吸罩15‧‧‧氣體調節器
