The invention discloses a bone fracture rehabilitation device and belongs to the field of medical equipment. The bone fracture rehabilitation device comprises a front physiotherapy cylinder, a rear physiotherapy cylinder, ultrashort wave therapeutic apparatus and a controller, wherein the front physiotherapy cylinder and the rear physiotherapy cylinder are hinged together, and the ultrashort wavetherapeutic apparatus and the controller are arranged on one side of each of the front physiotherapy cylinder and the rear physiotherapy cylinder; each of the front physiotherapy cylinder and the rearphysiotherapy cylinder comprises two detachable semi-circular cylinder walls which are matched with each other, and a telescopic rod member is arranged between the front end of the front physiotherapy cylinder and the rear end of the rear physiotherapy cylinder; two spiral extending movable guide rails are arranged on the outer surface of each of the front physiotherapy cylinder and the rear physiotherapy cylinder, rollers are arranged on the movable guide rails, a rotating shaft is connected between the two rollers, a moving hole is formed between the two movable guide rails, an ultrashort wave physiotherapy head of the ultrashort wave therapeutic apparatus is mounted on a drive rotating shaft located in the moving hole, and a rotating transmission component and a movable linkage component are arranged between the rotating shaft and the drive rotating shaft. The bone fracture rehabilitation device is relatively accurate in movement strength control and kept stable easily, larger-areaultrasonic treatment for the affected part and the peripheral area of the affected part can be realized, and the application is relatively convenient.