The design of the bed is based on traditional Chinese naprapathy and the physiological dissection theory of vertebral and peripheral nerve. It is a new device integrated by mechanical and electric parts. With the help of a Single-chip microcomputer, it could finish the action of pulling at one time. Cooperating with the naprapathy of doctor, it can achieve the treating goal. The traction bed is one of the best equipment for treating cervicodorsal and lumbar vertebrae at present. And medical records administrating software is also available. Eight different kinds of traction model(continuous, intermission, step and repeat type, etc.) 20 kinds of treatment scheme storage and read; Traction set value synchronaily monitoring with actual running ; Traction force automatic compensation function; Simple traction parameter input method.