The invention provides a ward wall-type oxygen inhalation mask connecting device. The device comprises a medicine conveying pipe, a first electric cylinder, a movable plate, an air conveying hose, a rotating rod, a sealing plate, a second electric cylinder, a movable shell, a sealing gasket, a spring, a detachable breathing mask and an air outlet pipe. The air conveying hose is fixed at the left end of the medicine conveying pipe; the movable plate is mounted at the left end of the medicine conveying pipe; the first electric cylinder is assembled at the right end of the movable plate; the rotating rod is arranged at the lower end of the movable plate; the rotating rod is assembled at the left end of the sealing plate; through the design, the medicine conveying pipe is contracted; the second electric cylinder is arranged on the inner wall of the movable shell; the detachable breathing mask is installed at the lower end of the air outlet pipe; the spring is assembled at the bottom end inside the detachable breathing mask; the sealing gasket is arranged at the upper end of the spring; and through the design, the detachable breathing mask can be detached. The device of the invention isconvenient to use and operate, is time-saving and labor-saving, and has high reliability.