The best age for a woman to get pregnant is between 24 and 30 years old, when ovarian function and egg development are better. During this period, women are healthier and less likely to develop diabetes, hypertension, uterine fibroids, endometriosis, etc., which helps the baby to develop. However, with age and reduced ovarian function, endocrine disorders are likely to occur, which can also affect ovulation and reduce the success rate, and make pregnancy more likely to be complicated by gestational diabetes and gestational hypertension. During the preparation period, it is recommended that couples strengthen their diet and nutrition, and exercise properly to enhance their resistance. It is also necessary to pay attention to getting enough sleep, quitting smoking and alcohol, which can promote fetal development and also prevent fetal malformations. After pregnancy, regular maternity checkups are needed to determine the fetal development.