A kind of breathing mask is fitted what and is installed for a conduit, and breathing mask includes a cover, an appendix and a lead piece. Cover include an air inlet and one adjacent to air inlet through-hole, appendix connects what air inlet and to transmit gas to air inlet, lead piece includes the cock body of an installation what through-hole and the sealing-plug that one is connected with cock body, cock body includes a resilient clamp piece in a ring, resilient clamp piece defines one and plugs hole and one extend to outer rim by inner edge and enable to plug the first geosutures that hole is softened and extends out, conduit can wear what and plug hole and be clamped by resilient clamp piece, and sealing-plug, which removably wears what and plugs hole, plugs hole to close.一種呼吸面罩適於供一導管安裝，呼吸面罩包含一罩體、一輸氣管及一導接件。罩體包括一進氣孔及一鄰近進氣孔之通孔，輸氣管連接於進氣孔並用以傳遞氣體至進氣孔，導接件包括一安裝於通孔之塞體及一與塞體相連接的密封塞，塞體包含一呈環形的彈性夾持片，彈性夾持片界定出一插設孔及一由內緣延伸至外緣使插設孔能被撐開而外擴的第一斷裂線，導管可穿設於插設孔並被彈性夾持片夾持，密封塞可拆卸地穿設於插設孔以封閉插設孔。
