From a medical professional point of view, if a couple has a normal sexual life after marriage and does not take contraception for one year, women who do not get pregnant are infertile. To explore the reasons, there are actually many factors for “not having children”, but the physiological factors only account for a small part of them, from the “hardware” point of view, the vast majority of couples are healthy, in recent years, from the patients seen, only 3% to 4% of patients are absolutely infertile. The proportion of patients belonging to absolute sterility, and lifestyle, psychological conditions and the external environment and other factors have become the main cause of healthy couples “difficult to conceive a child”. In addition 1, life attitude way premarital sex this attitude of life, become “difficult to conceive a child” an inevitable factor. In recent years, some people’s excessive “indulgence” in the concept of sex, leading to premarital sex is too common, but many women do not have the corresponding sense of self-protection, do not take any contraceptive measures. After getting pregnant and eager to solve the “problem”, they hastily choose abortion, but ignore the hazards of abortion. The more times an unmarried woman has an abortion, the more risks there are and the greater the physical and mental damage to the woman. For men, premarital sex is also prone to some male diseases that can lead to infertility. In addition, some irresponsible hospitals promote the idea of “painless abortion, does not affect fertility”, but also for premarital sex “green light”. 2, psychological pressure Related research has found that the emotional changes between couples and infertility have a close relationship, infertility caused by mental factors in women account for a large proportion of the clinical. Women of childbearing age, if under great stress for a long time, are prone to endocrine disorders and imbalances, which in turn affect the normal female bodily functions, and in this case, of course, it is not easy to get pregnant. Some couples overemphasize the need to have a quality baby, measuring ovulation, measuring body temperature, planning the best time to conceive, etc. This also makes the couple highly stressed and psychologically overburdened, which in turn affects conception. 3, bad habits Acting on the human body inside and outside the interference of adverse factors is also need to pay extra attention. From the perspective of the general environment, in recent years, although people eat better than before, but the excessive use of additives in food, crop abuse of pesticides, ripening agents, etc., which affect people’s health, which in turn leads to impaired reproductive function of men and women. However, this external environment is difficult to rely on the power of the individual to change, which requires more attention to the impact of some of the individual’s bad habits. Bad habits such as smoking, drinking, staying up late and excessive use of computers and cell phones can cause great damage to the body and lead to a state of “sub-health”. There is now some basic and clinical evidence of an association between smoking and male infertility. A large percentage of clinically infertile men are smokers. The damage of smoking for women is even greater, as it is pathologically harmful to female ovarian function, follicle formation, uterine fertility, and estrogen secretion. It is worth mentioning that second-hand smoke can also bring great harm to the body of the couple preparing for pregnancy. In addition, excessive obesity can also have an impact on fertility. With the great improvement in people’s living conditions, excess nutrition causes obesity, serious overweight, coupled with a lack of exercise, which can easily lead to pathological changes in the human organism, causing serious impact on sperm and eggs, resulting in reduced fertility.