The invention relates to the technical field of medical equipment and particularly relates to a multifunctional full-automatic medical bed. The multifunctional full-automatic medical bed comprises a bedside plate, a bed tail plate, a bed plate, protective plates, a bedstead, a truckle frame and truckles, wherein the bedside plate and the bed tail plate are arranged at the front end and rear end of the bedstead respectively; the protective plates are arranged on left and right sides of the bed plate; the bed plate is arranged at the upper end of the bedstead; the bed plate comprises a back plate, a seat plate and a leg plate in sequence from front to back; the seat plate is fixedly arranged in the middle of the upper end of the bedstead through a seat plate frame; the back plate is connected with the seat plate through a pin shaft; a back plate hoisting and overturning device is arranged between the back plate and the bedstead; the leg plate is composed of a large leg plate and a small leg plate, which are in pin joint; a large leg plate hoisting and overturning device is arranged between the large leg plate and the bedstead; a small leg plate angle adjusting assembly is arranged between the small leg plate and the bedstead; a bedstead hoisting device I and a bedstead hoisting device II are arranged between the truckle frame and the bedstead; and the truckles are arranged at the lower ends of four corners of the truckle frame. The medical bed provided by the invention can realize hoisting and overturning of the bedstead, the back plate and the leg plate and is good for rehabilitation of patients.