How to deal with fleas on your cat:
1. Owners should deworm their cats in a timely manner. They can purchase external flea and tick medication to eliminate fleas.
2. Let your cat bask in the sun more often. Fleas are afraid of ultraviolet rays and high temperatures, which can effectively kill fleas on your cat. 
3. Put a flea collar on your cat. The active ingredients released by the collar can kill fleas.
4. Use a fine-toothed comb to groom your cat's fur. The fleas will get stuck in the comb. Then kill the fleas with detergent.
5. Use medication to give the cat a full-body wash, starting from the head and working your way down to the tail, to thoroughly remove the fleas from its fur.
