There is a unified international standard for advanced maternal age for second pregnancy, which is defined as 35 years old, and any age older than 35 is considered advanced maternal age or advanced maternal age. For women of advanced age, they need to maintain a good state of mind, get enough sleep, eat a balanced diet and have a good body before they get pregnant. In addition, it is best to go to the hospital for a pre-pregnancy check-up to rule out some diseases that will not affect the pregnancy. After pregnancy, you need to be closely observed and undergo rigorous screening of the fetus at all stages in the hospital. Because the risk of having a malformed fetus is increased in older women, it is important to go to the hospital for timely maternity checkups and documentation after pregnancy to ensure that the mother can safely have a healthy baby.