At the age of 40, a woman can have a child if her ovaries are functioning normally and she is able to ovulate, but if there is an ovulation disorder, she may not be able to have a child naturally without treatment. When a woman is 40 years old, under normal circumstances, she is not menopausal, and she still has regular ovulation and menstruation, so if she has sex during the ovulation period, she can get pregnant and have a baby. However, there are some women who have diseases such as premature ovarian failure and cannot ovulate. Without treatment, they cannot have children naturally, but after undergoing IVF and other treatments, they have a chance to have children. In addition, conditions such as the state of the uterine lining and the quality of the male sperm can also affect pregnancy. It is recommended that women who have the need to prepare for pregnancy go to the hospital in time and undergo relevant examinations to determine whether their conditions are fertile.