Medical bed with adjustable supine angle

The utility model relates to the technical field of medical beds, and discloses a supine angle adjustable medical bed which comprises a frame, a bed plate assembly is arranged in an inner cavity of the frame and comprises a positioning frame and a lying plate, a supporting assembly is arranged at the bottom of the frame and comprises a supporting plate, a vertical plate and a transverse plate, and an adjusting machine is arranged in an inner cavity of the supporting assembly. According to the medical bed, the positioning frame and the lying plate are arranged to jointly form the bed plate assembly, a patient can be conveniently treated in bed, the servo motors, the threaded rods, the threaded sleeves, the bottom plate, the first push plate and the second push plate are arranged, and therefore the medical bed is convenient to use and high in practicability. By arranging an electric air cylinder, a push block and a third push plate, a lying plate can be driven to be in the reverse direction, the angle of the ly