Women in their 40s have a lower chance of getting pregnant than women under 35, but it is not impossible to get pregnant and requires more checkups and meticulous care to protect the fetus. A 40 year old woman over 35 years of age is of advanced maternal age, because with age, a woman’s ovarian function will decline, affecting normal ovulation, and with age, the quality of the follicles will decline, as well as the decline in body function leads to uterine muscle contraction force is reduced, the chances of getting pregnant will decline at the same time as the chances of miscarriage will be relatively high. A 40-year-old woman who gets pregnant will have a higher chance of having gestational hypertension, high blood sugar, high blood cholesterol, etc., and the probability of chromosomal abnormalities in the fetus will also increase accordingly. If a 40-year-old woman wants to get pregnant, she needs to go to the hospital for a detailed examination to determine whether her body can withstand pregnancy, and during pregnancy, she needs to take more careful care and closer observation, and she needs to consult a doctor immediately in order to avoid affecting her own health and the health of the fetus.