The invention relates to a massage medical bed, in particular to a back massage medical bed. The invention provides a back massage medical bed for automatically massaging the back of a patient and relieving numbness and pain of the back of the patient. According to the technical scheme: the back massage medical bed comprises a first vertical bracket, a bed plate, a second vertical bracket, a fixing plate, a sliding groove, a fixing block, a motor, a guide rod, a pin rod, a sliding plate, a slotted-hole plate, a pulley, a steel wire rope and the like; the upper part of the right side of the first vertical bracket is fixedly connected with the bed plate, the right side of the lower part of the bed plate is fixedly connected with the second vertical bracket, the right part of the bed plate isprovided with an opening, the right side of the vertical bracket is fixedly connected with the fixing plate, and the fixing plate is connected with the left side of the lower part of the bed plate. The device has the functions of automatically massaging the back of the patient and relieving the numbness and pain of the back of the patient, realizes the advantages of massaging the bottom of the feet when the legs are straightened for exercising, and massaging the bottom of the feet when the legs are bent for exercising, and has the advantages of convenient use, safe use and simple operation, low manufacturing cost and the like.