The invention discloses a limb stretching device for surgical treatment. The limb stretching device comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with the lowersurface of a supporting plate, and a sliding groove is formed in the right side face of the supporting plate. A sliding block is arranged in the sliding groove, and the lower surface of the sliding block is fixedly connected with the top end of a telescopic device. The bottom end of the telescopic device is fixedly connected with the upper surface of the bottom plate. According to the limb stretching device for surgical treatment, through arrangement of a belt, a hook-and-loop fastener, a rope, a coil, a clamping block, a second fixed pulley, a triangular block, an electric push rod and a handle, when a limb of a patient needs to be lifted to be bound, a doctor penetrates one end of the belt through the limb of the patient firstly, then the hook surface and the rough surface are bonded together, thus the doctor can bind the limb of the patient, the doctor does not need to manually lift the limb of the patient to conduct binding, physical power of the doctor is not dissipated accordingly, binding treatment is not influenced, and secondary damage to the limb of the patient is avoided.