The invention discloses a back percussion bat, and relates to the technical field of medical-care health products. The back percussion bat comprises a palm-simulated arc-shaped bat body with a cavity.Finger sleeves are arranged on the arc-shaped back surface of the bat body. A soft plate is connected to the edge of the front end of the bat body. A flat-plate-type inflatable cushion, namely a silica gel inflatable cushion, is connected to one side of the soft plate. An inflation valve for inflation is arranged on the flat-plate-type inflatable cushion. The bat body is made of rubber or plastic. By the back percussion bat, the problems of difficulty in intensity control and low accuracy of hitting points during back or chest percussion when the patients are clinically subjected to chest physiotherapy can be solved.