It is not too late to sterilize a female cat when she is 2 years old, as long as the cat does not have uterine diseases. When neutering, you should avoid the estrus period, because sterilizing a cat during estrus is very risky and prone to heavy bleeding. Moreover, before sterilizing a female cat, it is best to conduct routine blood tests, biochemical tests, coagulation function tests, etc. to avoid accidents during cat surgery and reduce surgical risks.