The reasons why the cat keeps meowing at the door at night:

1. The cat keeps meowing at night. It may be because the cat is hungry. The owner can give it some food. Give it and then observe the cat's condition.

2. If the cat keeps meowing at night, it may feel bored. At this time, you can find some toys that the cat likes to play with so that it can have something to play with.

3. If a cat keeps meowing at night, it may be that the cat is in estrus. After the cat goes into estrus, it will continue to meow. At this time, you can breed it. This is the fastest way to solve it. If you don’t want it to When a cat gives birth to kittens, it is best to have it neutered.

4. It is also possible that the cat litter needs to be replaced and the owner’s help is needed.

5. If the cat arches its back and keeps meowing, it may be ill and causing severe pain in the abdomen. You should take the cat to a pet doctor in time.

6. It is possible that the cat wants to go out. It will think that people are restricting its freedom, and will cry out to the owner to let it out quickly.

7. It may be a behavior of cats claiming sovereignty. You can check if there are free-range or stray cats around the house. These cats will leave a scent when they appear near the door of the house. The cat keeps meowing.

How to prevent cats from meowing at night:

1. Cats are very active at night. Owners can reset the cat's biological clock. During naps and nightfall, they can play with it more to make it tired, which can slowly change the cat's biological clock.

2. If a cat meows in the middle of the night, the owner should prepare enough food for the cat before nightfall to avoid the cat being hungry, so that the cat will not wake you up in the middle of the night.

3. A dirty litter box may be the reason why your cat keeps meowing at night. Cats like a clean litter box, and owners should clean it before going to bed so that the cat has a clean place to urinate.

4. Cats with visual problems or impaired cognitive function can use night lights at night to reduce fear, which will help reduce meowing at night.