An injection bed for metal patients belongs to the technical field of the medical instruments. The technical proposal of the invention is as follows: the injection bed comprises a bed board and bed legs, wherein a side lying groove is formed at the centre of the bed board; a rotating shaft is arranged on the inside edge of the side lying groove; a cambered steel plate is arranged on the rotating shaft; a pressing groove is formed on the front end of the cambered steel plate; a threaded column is arranged on the outside edge of the side lying groove; a positioning nut is arranged on the threaded column; a hip exposure hole is formed on the middle lower section of the cambered steel plate; a sliding arm is arranged on an edge of the hip exposure hole; a universal shaft is arranged on the sliding arm; an injection positioning scale is arranged on the universal shaft; a sleeve is arranged on the injection positioning scale; an injection ring is arranged on a side face of the sleeve; and a disinfecting cotton swab storage box is arranged on the upper section of the cambered steel plate. The injection bed is simple in structure, and simple and convenient, and time-saving as well as labour-saving for the operation of performing injection on metal patients; therefore, the working difficulty of the medical personnel is reduced.