The reasons why cats keep licking themselves are:

1. Cats have barbs on their tongues, which can comb their hair and help clean their bodies. This is a normal self-cleaning behavior.

2. Licking the body may also be a way for cats to relieve stress, especially when they are scolded or scolded by their owners. Licking can be used as a stress reliever when in a new environment.

3. Licking the body may also help cats regulate their body temperature. In summer, licking the body can help cats cool down, while in winter, licking the fur can make the fur fluffy and better keep warm.