In my many years of practice, I have found that more and more couples are miscarrying during early pregnancy. Therefore, I feel that it is necessary to give you some popularization and some health care before and during pregnancy. In layman’s terms, pregnancy is nothing more than a matter of seed and soil. The seed is whether the sperm and the egg are good, and whether the embryo formed is good. The soil is the lining of the uterus provided by the woman, is the environment of the uterine cavity good? During the ten months of embryo development, the room in which it grows, that is, the environment of the mother, is there a problem or not. Let’s start with the seed, which is the sperm of the male partner. Sperm is not only the number and vigor, but also the malformation rate, fragmentation rate and so on. All these are closely related to conception and early fetal abortion. Therefore, it is important for the male partner to have a detailed semen test, not just a routine semen test. In patients with greater than or equal to two fetal abortions, the male partner must also be tested for chromosomes, except for chromosomal problems. The rest of the tests for the male partner are relatively few. Because the male sperm can be taken out and tested, very simple and intuitive, so before pregnancy are recommended that men routinely carry out a semen test, eugenics. The female side of the examination is very much, because in addition to providing eggs, she also provides the room and soil for fertilization. So the whole environment of the mother and her own immune rejection need to be examined in detail, that’s why the female partner’s examination will be very much. Since I am studying reproductive male medicine, I am not at liberty to say much about the female side. You will have to consult a female specialist for a lot of female knowledge. There are relatively fewer tests on the male side. However, with the pollution of the environment, the increase of social activities, men’s daily life of smoking and drinking, exposure to toxic and harmful things more and more, men’s sperms are also declining and damaged year by year. So to do a semen test accurately, I think it is the biggest respect and responsibility to the woman. I remember reading a report by a Beijing expert who investigated and researched the environmental pollution in Beijing and how much air pollution affects the sperm of Beijing men. So we must pay attention to tobacco, alcohol, radiation, high temperature, formaldehyde, pesticides, chemicals. Industrial pollution and so on.