Female ovulation usually begins at the age of 13 to 14 years, with some individual differences. The appearance of regular menstruation is a sign of maturity of reproductive function, and ovulation usually begins after the first menstruation, which gives rise to ovulation. The age of first menstruation in women is most often between 13 and 14 years old, but may be as early as 11 years old or as late as 16 years old. Therefore, most women usually start ovulating at the age of 13 to 14. However, during the stage of first menstruation, a woman’s month is often irregular and ovulation has not yet established regularity. However, once ovulation occurs, there is a possibility of pregnancy if sexual intercourse occurs. Therefore, adolescent men and women should be provided with relevant health education to avoid unwanted pregnancy. It is recommended that women should pay attention to a balanced diet, not excessive dieting or partiality, adhere to a moderate amount of daily exercise, avoid staying up late and so on, to help maintain a normal ovulation cycle.