The utility model relates to a positioning device of a respiratory treatment mask.It includes: one button connector,Two assembly holes are formed through the hole.A rotating seat interposed between two assembly holes is formed on the buckle seat.A shaft hole is formed through the rotating seat.A circular groove is formed on the outer periphery of the rotary seat.And a certain fixture,It is fixed on the buckle seat.It has a rotation axis.Two elastic arms,One clamping groove and two buckle arms,The rotating shaft is arranged in the shaft hole of the buckle seat.The top of the spin axis of the two elastic arms extends outwards.The two buckle arms protrude downward from the lower edge of the elastic arm.The bottom ends of each buckle arm are respectively formed with a buckle part arranged in the annular groove of the buckle seat；Among them,When pressing and making the two elastic arms close to each other,It can keep the two button arms away from each other.And the hook part is quickly separated from the circular groove of the rotary seat.一種呼吸治療面罩的定位裝置，其包含有：一扣接座，其上貫穿形成二組裝孔，在扣接座上形成有一介於兩組裝孔間的旋轉座，該旋轉座上貫穿形成有一軸孔，在旋轉座外周緣形成有一環形溝槽；以及一定位夾具，係以設置在扣接座上，具有一旋轉軸、二彈性臂、一夾槽以及二扣臂，該旋轉軸設置在扣接座的軸孔內，兩彈性臂自旋轉軸頂端向外延伸，兩扣臂分別自彈性臂下緣向下突伸出，且在各扣臂底端分別形成有一扣設在扣接座的環形溝槽內的扣勾部；其中，按壓並使兩彈性臂朝彼此靠近時，可令兩扣臂彼此遠離外張，並使扣勾部快速脫離旋轉座的環形溝槽。
