The invention relates to a slicing machine, in particular to a sweet potato slicing machine. According to the technical aims to be achieved, the sweet potato slicing machine is uniform in slicing, safe, reliable and simple in operation. To achieve the above technical aims, the sweet potato slicing machine comprises a base, a first sliding block, a support, a first fixed plate, a first nut, a second nut, a first screw, a second fixed plate, a motor, a third fixed plate, a first bearing pedestal, a first rotary shaft, a slicing cutter disc, a sliding rail, a second sliding block, a charging box,a fixed rod, a third nut, a universal seat, a universal ball, a second screw and a fourth fixed plate. The sweet potato slicing machine achieves the function of slicing sweet potatoes, replacement ofthe slicing cutter disc is facilitated, the function of pushing sweet potato discharging is achieved, and the sweet potato slicing machine has the advantages of being simple in operation, safe and convenient to use, uniform in slicing and the like.