Possible reasons are as follows: 1. The kitten will not be able to adapt to the situation when it has just left its mother cat, and will look for the mother cat by shouting at night; 2. The cat feels hungry and there is no food in the bowl, and will shout to remind the owner to feed. ; 3. Female cats will make loud calls for 5-10 consecutive days at night during estrus; 4. Cats will make loud calls when playing and catching at night. Among them, the ones that meow at night are basically female cats in estrus.