After the liberalization of the two-child policy, the demand for childbearing has been rekindled, and many middle-aged people are eager to do so. However, at the age of over 35, or even more than 40, after years of “indulgence” and “laxity”, is the body still able to do so? Can they still have children? Will the child be healthy? We all have no idea in our hearts, so we need to go to the hospital to check the fertility of both parties – this is eugenics. When it comes to eugenics, it seems to be women’s business, pre-pregnancy checkups, pregnancy health care, fetal education and so on, it seems that there is no part for men. In fact, this view is wrong, men have the same responsibility in eugenics. In the considerable period of time before giving birth, the male “performance” is good or bad, on the baby eugenics have an immeasurable impact. A large number of clinical facts have been confirmed, the father and the baby’s health has a very close relationship, then the husband before pregnancy to pay attention to what problems? 1, pre-breeding eugenic examination Before men intend to have children, it is best to do a comprehensive pre-breeding eugenic examination to see whether there are pathogens infections; whether semen is normal, whether the blood type is matched, whether the chromosomes are normal and so on. Of course the prenatal of the second child, only need to check the semen quality and hormone level. If found problems timely treatment, so as to avoid problems after pregnancy and then take action to mend. From the clinical observation, there is a considerable proportion of men with reduced sperm count, low vitality and increased deformed sperm. After effective treatment, the occurrence of spontaneous abortion due to sperm quality problems has been greatly reduced, indicating that prenatal eugenic examination is very necessary. 2, keep the fine seed In recent years, due to the deterioration of the living environment, male fertility is declining, in the past 50 years the density of human spermatozoa has dropped by half. The World Health Organization has issued a warning to people. Some men’s sperm quality and quantity are problematic, resulting in many unqualified “seeds”, such a birth, the formation of the embryo is often spontaneous abortion or developmental anomalies, easy to bring harm to eugenics. 3, develop good habits Bad habits, the impact on male fertility is very significant. Drinking a lot of alcohol has an obvious toxic effect on the male reproductive system, it can make the quality and quantity of sperm abnormal. It has been reported that “in the month before the wife becomes pregnant, for example, if the husband drinks 30 milliliters of alcohol per day; or if he drinks liquor 10 times in a month, with more than 50 milliliters each time; or if he has consumed alcohol once in a month, and the amount of alcohol is greater than or equal to 125 milliliters; his wife is prone to give birth to low birth-weight babies”. Such low-birth-weight babies will not only bring difficulties in feeding, but the babies will also be adversely affected in terms of disease resistance, growth rate and intellectual development. Parents who drink alcohol not only affect themselves, but also the next generation. It is important to maintain a good physiological state before giving birth. Stay up too late, can reduce the body’s immune ability, should pay attention to scientific rest; some harmful to fertility food, such as celery, cottonseed oil can reduce the sperm vitality and quantity, should avoid eating; scalding water, high temperature is not conducive to sperm production, should avoid hot baths, do not go to the sauna; too much smoking in the male can not only affect the quality of the sperm, but also due to his wife’s passive smoking will affect the normal development of the embryo and the fetus, should be avoided before conception and the wife to conceive a child. You should quit smoking before conception and for quite some time after your wife gets pregnant. In addition, radiation, cell phone computer electromagnetic furnace microwave oven have radiation, can lead to sperm deformity rate increase. 4, maintain a good state of mind Emotional and mental factors on eugenics, more and more attention by the medical profession. In the past, people pay attention to the mother’s emotions on the fetus, in recent years, medical research has proved that the poor family environment, stressful work pressure, fear of survival, are not conducive to fertility. Some data show that children born under poor emotional and mental conditions are prone to abnormalities in their temperament, and are prone to develop withdrawn and perverted personalities. Maintaining a good mood and a relaxed working environment is not only beneficial to men’s own health, but also has a positive impact on fertility. At the time of childbearing, a good family environment should be maintained. Couple love and happy mood is one of the great joys of life and an important part of eugenics. Therefore, I suggest, in the female ovulation before 3-5 days, couples should create a pleasant mood, watch movies, travel, friends get together, etc., so that the chances of conception is also high, the quality is also good. 5, away from the harmful working environment Testicles are very sensitive to the surrounding adverse environment, the adverse environment will make damage to the spermatogenic function of the testicles. Research has confirmed that the harmful substances to sperm are lead, mercury, cadmium, tin, arsenic, nickel, cobalt, benzene, etc., which will have a bad effect on male fertility. For example, pesticides can also cause sperm abnormality, which in turn can lead to miscarriage, stillbirth, and neonatal defects; radiation, isotopes, and electromagnetic waves can all cause sperm abnormality in males, resulting in varying degrees of neonatal birth defects. When planning to have children, you should temporarily stay away from these harsh environments that are not conducive to fertility. If you really can’t leave, you should pay attention to your own protection at work, operate according to regulations, and raise your awareness of self-care. Once conceived in an unprotected state, attention should be paid to pregnancy checkups and timely measures should be taken when abnormalities are found. 6, the treatment of the disease has suffered There are many diseases, eugenics have a negative impact on eugenics. If men suffer from hepatitis B, anti-sperm antibody positive, mycoplasma, chlamydia infection, syphilis, gonorrhea and other sexually transmitted diseases, will affect male eugenics. For example, with hepatitis B, where HBV-DNA and HBeAg are positive, there is a risk of carrying the hepatitis B virus through the sperm and fetal infections occurring; anti-sperm antibodies affect the sperm’s ability to fertilize and the development of the embryo. As long as the detection of sexually transmitted diseases, should be treated seriously, after the cure before having children. 7. Avoid taking drugs indiscriminately Medicine is a poison, so be careful with medication. Before you plan to have children, you should be more careful with drugs and avoid abusing them. Clinical research data show that many drugs on male reproductive function and sperm quality will have an adverse effect, these drugs can easily lead to newborn defects, such as infant developmental delay, behavioral abnormalities. Men should not abuse drugs before giving birth, and when they have to use drugs, they should consult a doctor and not do it on their own. Even if it is a tonic medicine, consult a doctor to make sure there are no side effects before you can take it safely.