The reasons why cats always rub their cheeks against hard objects:

1. When a cat rubs against its owner, it wants someone to play with it.

2. If the cat rubs against things and makes strange noises, it may be in heat, and the cat needs to be neutered or bred.

3. Cat rubbing against people is a way to express closeness, and it may also express emotions such as coquettishness and trust.

4. Cats have a strong sense of territory. They have some special sweat glands on their heads. Sometimes they find things to rub against to retain their special smell.

5. The cat's constant rubbing may also be a sign of skin disease. The cat's body is itchy but cannot be scratched. At this time, the owner needs to carefully check whether the cat has skin disease and seek medical treatment in time.