A nail cutting device for animal pads comprises a pedal, a clamping device arranged on the pedal and a nail cutter located above the clamping device. The clamping device comprises at least two fixators. Each fixator comprises a fixing groove formed in the pedal and a stretchable rod running through the fixing groove, a clamping plate is connected to the inner end of the stretchable rod, the regionformed by the clamping plate is the region to be cut, a pushing plate is connected to the outer end of the stretchable rod, a rocker is rotationally connected to the pushing plate, and a lead screw structure is further connected to the rocker. The nail cutting device is used for cutting nails of animal pads, such as horseshoes; during nail cutting, the horseshoes are reliably fixed, kicking injuries are avoided, excessive portions growing from the horseshoes can be rapidly cut away, and labor and troubles are saved; after the animal pads are clamped and fixed, nail cutting can be completed, shodding can be performed, the working efficiency can be improved, the animal pads are protected, and the device is economical, practical and suitable for being popularized.