The long nails on the cat’s flesh pads are caused by keratin hyperplasia. This condition occurs when cats often walk on uneven surfaces, causing the flesh pads to rub. You can use exfoliating scrub to clean the cat's meat pads, and then apply hand cream to keep the cat's meat pads moist and clean. You should also take care of the cat's meat pads regularly to avoid aggravating the situation, and try not to let the cat walk on rough surfaces.