The modernization of society is a double-edged sword, which brings a richer material life to mankind, but also inevitably brings environmental pollution, food safety, increasing work pressure, etc. The decline of fertility caused by this is a major problem facing all mankind. If male friends in daily life can pay attention to the following points, to protect their fertility will be very beneficial. 1, to develop good habits. The actual fact is that you will be able to get a lot more than just a few of the most popular and popular items. Alcohol is a gonadal toxin, excessive or long-term alcohol consumption, can cause gonadal toxicity. Men can experience a decrease in serum testosterone, a decrease in libido, low sperm vitality, dead sperm and abnormal sperm elevation and sexual dysfunction. According to studies, 71% to 80% of alcoholic men either have a decreased libido or sexual impotence, or both. Smoking has an effect on every aspect of sperm production and maturation. A comparative study was conducted on 41 smokers and nonsmokers with approximately the same sperm concentration. It was found that the percentage of malformed sperm in the semen of smokers was much higher than that of nonsmokers. It was also shown that those who smoked more than 20 cigarettes a day had a significantly higher rate of sperm malformations than those who smoked less than 20 cigarettes. In addition, the longer the smoking period, the more deformed sperm, the sperm density began to decline, and the sperm motility was significantly reduced. The reason for this may be related to the cadmium and nicotine contained in tobacco. Nicotine affects the testicular germ cells and has the effect of inhibiting the secretion of sex hormones and killing sperm. Cadmium is a metal pollutant. Cadmium that enters the body is more likely to accumulate on the testicular tissue, and excess cadmium can lead to pathological damage to the testicular tissue. To develop good eating habits, do not be partial to food, do not eat fast food often, do not drink or drink less coffee drinks as much as possible. Less sugar, less fat, avoid foods containing preservatives and coloring agents. Fruits and vegetables should be washed repeatedly before consumption, and do not use Styrofoam lunch boxes for hot meals or heating food. 2, do not wear tight underwear, no sauna, no sitz bath, do not often sit on soft sofas. To ensure the appropriate testicular sperm production temperature. “No hair dyeing, no h oil” to prevent damage to reproductive function from certain chemical components. Do not use electrical products such as computers for a long time, pay attention to the protection of ion and ray radiation. 3, it is best not to use skin care products, especially female cosmetics. Because some cosmetics have a certain amount of estrogen, long-term use will cause male gonadal axis dysfunction, affecting the testicular spermatogenic function. 4, to prevent indoor decoration pollution. The most common toxic substances of indoor decoration are formaldehyde, radon gas, benzene, xylene and certain radioactive substances, which have great influence on male sperm quality and embryonic development. Especially radon gas, which mainly exists in some building materials such as granite slabs, concrete or cinder blocks, is a colorless and tasteless gas produced by the decay of uranium and thorium elements. Therefore, the newly built and just renovated houses, must pass the relevant departments of testing, after meeting the standards before moving in, regardless of winter and summer should pay attention to open windows and ventilation. 5, men engaged in special occupations to enhance the awareness of reproductive function protection. Certain occupations such as painting, welding, leather manufacturing, some chemical companies, chefs, gasoline workers, etc., because these occupations have a certain impact on male reproductive function, it is recommended that unmarried or infertile people, to do a good job of protection; for men whose reproductive capacity has declined, it is best to change jobs. Avoid the “ticket”, no “child” this situation occurs. 6, popular knowledge of sex, advocate sexual civilization. To strengthen the knowledge of sex and reproduction of general knowledge, understanding of male physiological characteristics and health care knowledge. 7, cleanliness and self-love, prevention of sexually transmitted diseases. Many sexually transmitted diseases such as gonorrhea, non-gonococcal urethritis, genital herpes, etc. have a great impact on male fertility, so male friends must withstand the temptation to be clean and prevent sexually transmitted diseases. It is best for male friends not to soak a large pool bath, especially for those who are circumcised. 8, adjust the mood, strengthen exercise. Good mind, happy mood, strong physical fitness, can improve the body’s immune system, can effectively prevent a variety of bacterial and viral infections, such as testicular epididymitis, viral mumps orchitis, etc.; research has confirmed that obesity can lead to a decline in sperm quality, and through exercise can avoid the occurrence of obesity. 9, regular physical examination. Especially the medical examination of the reproductive system, it is recommended that it is best to have one time a year. If abnormal changes are found in the testicles, such as enlargement, hardening, unevenness, pain, etc., be sure to see a doctor in a timely manner. 10. Pay attention to safety and avoid straddling injuries. If you have a straddling injury, regardless of the severity, you should go to the hospital in time to clarify the degree of damage to reproductive function.