Rat-shaped cutter

The invention discloses a rat-shaped cutter. The rat-shaped cutter comprises a shell body, a circular blade, a central shaft, a lifting button and an elastic part, an accommodating cavity for accommodating the circular blade is formed in the shell body, a gap for exposing the circular blade is formed in the outer part of the shell body, the central shaft is fixed into the accommodating cavity, thecircular blade comprises an installation hole, the circular blade is rotatably arranged on the central shaft in a sleeving mode, a plurality of limiting grooves are formed in the periphery of the installation hole on the upper surface of the circular blade in a surrounded mode, a yielding hole corresponding to the central shaft is formed in the upper surface of the shell body, the lifting buttonpenetrates through the yielding hole and is slidably matched with the central shaft, limiting convex columns matched with the limiting grooves are arranged on the lower surface of the lifting button,and the two ends of the ela