Female cats usually change litters because they feel danger or threat. Therefore, it is best not to touch the kittens casually after the mother cat gives birth. This will cause the kittens to be contaminated with human odor, causing the mother cat to abandon or eat them. Drop the kitten. If the mother cat has already picked up the kittens, it is best not to intervene. The owner can check the health of the kittens when the mother cat comes out of the nest to eat. If the kittens are found to be in poor health, they can also be artificially fed. Because female cats usually abandon kittens with poor health, or they will ignore some kittens when their own milk supply is insufficient.