With the increase of modern women’s life and social pressure, the lengthening of the learning cycle, the popularity of family planning surgery and the richness of urban nightlife, the incidence of infertility in China is increasing year by year. The best age for women to have children is 22-35 years old, too young because the reproductive organs have not yet developed, often resulting in difficult to conceive, while too old, the ovarian function is reduced, reproductive capacity is reduced, which will also increase the difficulty of conception. A normal healthy couple of childbearing age has a 20% chance of conceiving in each menstrual cycle and a 92.6% chance of conceiving in a year if they maintain a couple’s life 2-3 times a week. Too low frequency of conjugal life can easily lead to male sperm motility. 1, pre-conception examination: perfect pre-conception examination is the first line of protection to give birth to a healthy baby. At present, China provides basic pre-conception checkups (free of charge) for married couples, including semen examination for the male partner; Torch virus, thyroid hormone, gynecological ultrasound and gynecological inflammatory disease for the female partner, which are sufficient to rule out congenital developmental abnormalities and intellectual defects in embryos due to maternal viral infections. However, for women with menstrual disorders (abnormal periods, cycles, menstrual volume, etc.), they need to further check the endocrine hormone levels (on the morning of the second to fourth day of menstruation), monitor the basal body temperature if normal, and if necessary, go to the hospital to monitor ovulation by ultrasound in order to adjust the time of conjugal life and increase the chances of conception; those with abnormal examinations need to prepare for pregnancy after adjusting the indicators to the normal range in order to increase the chances of conception and improve the quality of fertility. 2.Life and living: the couple should try to standardize their daily routine in the first three months of pregnancy, avoiding late sleeping and staying up late; strengthening exercise, 30-60 minutes of activity every day, with slight sweating as appropriate; trying to dress loosely; avoiding X-ray exposure and CT and other related examinations. 3. Diet regulation: Eat regularly, have balanced nutrition, and take folic acid supplements routinely in the first three months of pregnancy; if the diet is obviously biased, take appropriate vitamin supplements, etc. 4. Precautions for pregnancy preparation: (1) Do not be arrogant when living regularly (2) Do not be lazy when exercising (3) Relax and avoid being nervous (4) Do not be blind when having standardized checkups (5) Seek medical advice if you encounter problems (6) Believe that you will be able to conceive. 5. Precautions for pregnancy preparation: Once you have intercourse without taking contraceptive measures, you should be cautious when using medication and activities, regardless of whether you are ovulating or not, and deal with them according to the medication and living of pregnant women. When you encounter obvious menstrual disorders (low volume, wrong period, pain), you should go to the hospital in time. (1) The more nutrients you eat, the better: it is enough to ensure balanced nutrition before pregnancy preparation, too much calcium, folic acid, vitamins, etc. may cause vitamin accumulation and partly affect the normal menstrual cycle; (2) Blind examination: many patients ask for tubal examination at the clinic once they have been preparing for pregnancy for several months, not knowing that tubal examination is an invasive test, which may cause pelvic inflammatory disease, pain, etc. if not done properly. (3) having intercourse only on the day of ovulation: some young couples, based on the traditional concept of “nurturing the essence”, focus their intercourse on the time before and after ovulation. This is not advisable. Because the metabolic cycle of sperm is 3-7 days, and the average sperm quality is best 5 days after ejaculation, having intercourse before and after ovulation can increase sperm metabolism and prevent sperm from aging in the body for too long and reducing vitality.