The reasons why cats in estrus keep meowing: 1. When cats are in estrus, it is very painful not to be bred, so they will be more impatient, so they will keep meowing. 2. Cats want to attract the attention of the opposite sex by howling. 3. Cats are emotionally disturbed and excited, so they will keep howling.

Solutions for cats that keep meowing when they are in estrus:

1. Cats are prone to emotional disorder and excitement during the estrus period. This will happen if they cannot find a cat that can be bred with. Anxious mood, often howling. The cat can be stroked gently. When the cat is in heat, the owner can comfort the cat's anxious mood by stroking the cat's back and butt.

2. Diversion of attention: When the cat barks, the owner can use cat sticks, balls, snacks, cans and other items to distract the cat. Playing with a cat can also enhance the relationship between the cat and its owner.

3. You can eat estrus-resistant powder to control and inhibit the female cat’s estrus. It should be taken continuously for 7-10 days, and it can be taken when the cat starts to go into estrus. There is no harm to cats if they eat forbidden love powder, but don’t eat it often.

4. You can give your cat some catnip to relieve its anxious howling during estrus. Catnip can calm them down and return them to a relaxed state. Catnip is not addictive, and feeding cats can provide relief to a certain extent.

5. Sterilization. If the cat owner does not have the need to breed the cat, the cat can be sterilized after the cat's estrus period is over.