The invention discloses a limb traction device.The limb traction device comprises fixing bands, bearing pedestals and traction devices; the number of the fixing bands is two, and the fixing bands include the front fixing band and the rear fixing band; the bearing pedestals include two front bearing pedestals and two rear bearing pedestals, the two front bearing pedestals are fixed to the front fixing band, and the two rear bearing pedestals are fixed to the positions, corresponding to the two front bearing pedestals, of the rear fixing band; the number of the traction devices is two, the two ends of each traction device are fixed to the front bearing pedestals and the rear bearing pedestals respectively, and each traction device comprises an inner supporting rod and an outer supporting rod, wherein the front end of the outer supporting rod is fixed to the corresponding front bearing pedestal, a threaded hole is formed in the rear end of the outer supporting rod, an external thread matched with the threaded hole is formed in the outer wall, close to the front end, of the inner supporting rod, the front end of the inner supporting rod penetrates through the corresponding rear bearing pedestal and is connected with the outer supporting rod through threads, and the inner supporting rod can rotate on the corresponding rear bearing pedestal.By means of the mode, limb traction can be realized for reset, and the effects of resetting and supporting bone fracture are achieved.