The reasons why kittens like to bite their fingers:
1. Kittens like to bite their fingers, maybe because they regard the owner’s fingers as toys. The owner can prepare some toys for the cat. Play with it.
2. Cats are very curious. When they see their owner’s fingers moving, they feel curious and like to hold their fingers and bite them.
3. When a cat feels excited when playing, it will also bite the owner's fingers to express its emotions.
4. If the owner touches the cat's sensitive parts and makes the cat feel uncomfortable, it will keep biting the owner's fingers.
5. When a kitten has itchy teeth, it will bite its owner's fingers to grind its teeth. You can prepare a teething stick for it.