The invention provides a leather drying machine, which belongs to the technical field of leather production equipment and solves the technical problems of poor drying effect and the like of existing leather drying equipment. The leather drying machine comprises a base, wherein a drying drum with an opening at the upper end is fixedly arranged on the base; a driving motor is arranged at the bottom part of the drying drum; a rotating disc is connected onto an output shaft of the driving motor; a positioning shaft is arranged in the central position of the rotating disc and is provided with a clamping device which can fix two edges of leather on the positioning shaft; the rotating disc is also uniformly provided with three tensioning drums which abut against the leather and tension the leather; an air drum is arranged at the outer side of the drying drum, is internally provided with a fan and is communicated with the drying drum; the upper end of the drying drum is provided with a spongy water absorbing plate covering the opening; electric heating wires are arranged in the tensioning drum. The leather drying machine provided by the invention has the advantages of good drying effect and the like.