Whether you are having your first child or your second, it is recommended that you have your baby between the ages of 20 and 35, which is the optimal age, both psychologically and physiologically. If you are over 35 years old, you are of advanced maternal age and experience a relative increase in comorbidities. So if you are over 35 years old, the function of your ovaries will gradually decline and your chances of getting pregnant decrease as you get older. Therefore, if you want to have a second child, it is best to have it before the age of 35, which is the optimal age. It is recommended to do the appropriate health checkups before planning to get pregnant to understand ovarian function and the basic health of the body before preparing for pregnancy, which is conducive to optimal birth and fertility.