Artificial fertility means mainly include artificial insemination, the first, second and third generation IVF techniques, which are “salvage” measures taken by reproductive health workers using modern high technology to fulfill the dream of infertile couples to achieve “good pregnancy”. In the process, the main things that men should pay attention to are as follows: 1. Avoid smoking and alcohol (drinking below a moderate amount has little effect on fertility), refuse beverages (especially those that contain the ingredient of radix root), refuse sperm-damaging drugs (especially antibacterial agents) and foods (such as celery and cottonseed oil), stay away from radiation, stay away from all kinds of harmful chemicals, do not take saunas, try to avoid high-temperature environments, work and live in a tight-fitting environment, and do not wear tight-fitting clothes for a long time. Work and live, do not wear tight underwear for a long time (testicles are afraid of heat, not cold! Sauna or long-term wearing tight underwear, etc., will make the local temperature rise, thus affecting sperm production! Some data confirm that if a fever exceeds 39 degrees, it is possible to inhibit the sperm function for more than six months). 2, the male partner should also improve the following tests: ABO and Rh blood type; blood and urine routine, liver function, kidney function and blood sugar; hepatitis B five, hepatitis C antibody, syphilis and AIDS antibody; semen routine analysis report. If the results are from a foreign hospital, according to national regulations, they should be the laboratory test results from a tertiary hospital or a copy of the hospital’s diagnostic seal. 3, if the male multiple semen examination sperm density are < 10 million/ml, or ≥ 2 spontaneous abortions, should improve the chromosome examination (if necessary, also need to check the Y chromosome microdeletion). 4.If the male is azoospermic, he should further improve the reproductive system ultrasound and sex hormone examination in addition to the above examination.