At the age of 40, women can have a second child as long as they are in good health and meet the requirements for pregnancy. The presence of some serious underlying diseases is not recommended to have a second child to avoid affecting the health of the pregnant woman and the fetus. Under normal circumstances, women’s ovarian function will decline after the age of 35, which may have some impact on women’s fertility, but when undergoing a physical examination, as long as the body is relatively healthy and meets all the requirements for pregnancy, you can have a second child. Women in their 40s with one underlying disease, such as high blood pressure, diabetes, etc., and it is more serious, it is not recommended to get pregnant, because after pregnancy may lead to the aggravation of these underlying pathologies, and in serious cases, it may also affect the development of the fetus. During pregnancy, pregnant women should adjust their dietary habits, rest on time, avoid drinking and smoking, do not use medication arbitrarily, and consult a doctor in a timely manner after an abnormal situation arises.