A cucumber rotating and slicing device is characterized by comprising an outer shell 1, a blade 2, a conical feed inlet 3, a discharging outlet 4 and a fixing screw 5. The blade 2 is mounted between the conical feed inlet 3 and the discharging outlet 4 and fixed through the screw 5. The width of the discharging outlet can be adjusted through the blade 2 via the screw 5, and therefore the thickness of cucumber slices can be adjusted. A cleaned cucumber is placed in the feed inlet 4, and then the cucumber is rotated; the sliced cucumber comes out of the discharging outlet after passing through the blade 2 like pencil sharpening, and then the wide, thin and long cucumber slices are obtained; simple beautifying can be conducted after the cucumber slices are laid on the face. By means of the cucumber rotating and slicing device, time can be saved, cucumbers are not wasted, and the device is simple and practical.