1. Between the ages of 24-29 and 25-30 is the appropriate age for childbirth. 2.Summer and autumn are the seasons of pregnancy. 3. Home is the best place to conceive. 4.Smoking, alcohol, drugs, etc. are contraindications for conception. 5.Under normal rule, the day of ovulation is about 14 days before the next menstrual period, and the day of ovulation can be measured by basal body temperature. 6.Health checkups should be done before conception, especially for heart, liver, kidney and other organs to ensure the health of mother and child and to avoid congenital defects. 7.Be careful not to pass on hereditary diseases such as cancer and congenital heart disease to the next generation. 8.Hepatitis B test should be done before pregnancy. 9.The father can also affect the fetal development. 10.Avoid drugs, radiation and other external factors affecting the health of the fetus during the third or fourth month of pregnancy.