My cat always likes to lick my face, what could be the reason?
So why do cats like to lick people? The reason is simple: it's a way for cats to show affection, a way of expressing love. You might find this behavior strange, but it's also part of what makes cats so endearing. Cats don't do this to just anyone. In their world, they only lick people they're closest to. So when your cat licks you, you should never discourage this gesture. Doing so will confuse the cat and make it feel disliked, thus hurting its self-esteem. 
Specific reasons:
1. To relax
Kittens often groom themselves, showing love for their bodies and practicing self-cleaning. After eating, they'll wipe their whiskers with their front paws; after urinating, they'll lick their fur; and after being held, they'll lick their fur. This is how kittens remove odors and dirt. A cat's tongue has many rough little bumps, making it an ideal tool for removing dirt.
Kittens often rub their bodies to relax, but a closer look reveals that they do this even when they're not doing anything. In other words, kittens enjoy rubbing their bodies; it's a way of relaxing. Kittens often need to completely curl up before they can fall asleep peacefully. It's important to note that kittens will also rub their bodies intensely when they feel tense or stressed. If they rub too hard, it can cause fur loss and bald patches. In such cases, it's important to check if the kitten is experiencing any difficulties.
Second: Cats use body language
Rubbing against someone is a sign of affection. "Cat body language" refers to how cats use their ears, tail, fur, mouth, and body to express their feelings. If a cat snuggles up to your feet or side and rubs its head against you, it's a sign of affection. If a cat rubs a scent secreted from its mouth onto you, it means it wants to possess you. A purring sound from a cat's throat indicates it's in a good mood. And if a cat curls its front paws inward like a duck incubating eggs, it signifies its comfort and dependence.
When attacking, they adopt a "cool" posture. Have you ever woken up late in the morning and affectionately pressed your nose against your cat's? That's the cat saying "hello" or "good morning" to you. Conversely, when a cat is angry or attacking, its ears are bent back, its fur stands on end, its body is lowered, and its tail is held upright. If you understand this body language, you'll be able to communicate more effectively with your adorable cat.
Cats lick their fur for several reasons. Cleaning their mouths after eating is the most common action, but when a cat is in a bad mood, it will lick its fur until it's soaked with its tongue if anyone holds or touches it before calming down. This indicates they dislike the smell of people. Cats about to give birth will lick the fur off their bellies with their rough tongues to expose their nipples so their kittens can easily suckle. Cats also lick their fur when they have ringworm or parasites to relieve itching.
