The cat's claws may be caused by being stabbed by foreign objects, such as glass residue, iron nails, etc., which leads to inflammation and ulceration of the claws; the cat's claws are infected by fungi, resulting in skin damage; the cat's claws suffer from intertina or intertina cysts, which leads to ulceration of the claws.
There are these ways to deal with cats' rotten paws. First, clean the hair around the festering part of the cat's paws, and then use normal saline or hydrogen peroxide to clean and disinfect.
If you are stabbed by a foreign object, apply anti-inflammatory drugs, pets, etc. to your paws, and then bandage them; if you are infected by fungi, apply ointment to your paws to treat fungi; if you are suffering from interphalanitis, use special drugs for treatment. Put an Elizabethan ring on the cat to prevent it from licking its feet.