The invention relates to a U-
shaped beam three-dimensional movable positioning
bed suitable for radiotherapy and belongs to the manufacturing technical field of novel medical auxiliary equipment. The U-
shaped beam three-dimensional movable positioning
bed comprises the following 20 components: a base, a horizontal rotating
servo motor, a U-
shaped beam, a longitudinal swinging
servo motor, a worm A, a worm gear A, a longitudinal swinging shaft, a longitudinal main beam, a transverse swinging shaft, a cross beam, a frame, a transverse swinging
servo motor, a worm B, a worm gear B, a three-section type
bed board, a
rocker arm support, an electric lifting screw, a bed board hinge, constraint fixing belt, an intelligent controller and the like. During usage, the working power supply of the intelligent controller is switched on, and an operation track control program is preset according to the
irradiation treatment requirements of a specific patient. After that, an operation switch is turned on. The program of the U-shaped beam three-dimensional movable positioning bed can be preset to realize the scanning motions of different tracks or realize the positioning operation on different
irradiation parts. The U-shaped beam three-dimensional movable positioning bed has the advantages of being reasonable in design, compact in structure, convenient to use and the like.