It has been found that the occupations that men work in may contribute to infertility. And most of the infertility patients who come to the clinic, occupation is also mostly concentrated in the seven occupations described below, the impact of these occupations on male infertility should not be underestimated. A chef, steel (iron) workers, firefighters, etc. The factor that affects infertility is heat exposure, when the temperature of the scrotum is below the normal body temperature of 1 ℃, conducive to the maturation of sperm. And if the long-term high temperature, the spermatogenic microenvironment in the testes will be destroyed, the tissue degeneration, therefore, the infertility rate in the high-temperature work population is generally increased. Second, often exposed to toxic substances occupations such as: male fruit and vegetable farmers, long-term exposure to pesticides, organophosphorus, organochlorine can make the testicles of the varicose sperm vasculature degeneration, necrosis, sperm maturation disorders thus leading to infertility. Also includes leather pigment workers, painters, printers, etc. Battery workers, foundry workers, lead smelters Long-term exposure to lead can affect sperm motility, slowing down the movement of sperm, increasing the percentage of deformed sperm, and reducing libido, etc. Fourth, radiation professionals, miners Chemical industry brings air, water and other pollution in the environment, can cause male testicular atrophy, reduced sperm density and increased malformation rate, resulting in abnormal sexual and reproductive function thus leading to infertility. Five, welders engaged in long-term welding work, welding arc brightness is very strong, there will be strong infrared radiation, can cause burns on the skin, welding on the body is radiation, long-term welding work will affect fertility. Sixth, the businessman tobacco and alcohol addiction poses a serious threat to reproductive health, smoking can reduce sperm vitality and fertilization ability. Alcohol can inhibit the enzymes involved in the synthesis of testosterone, inhibit the synthesis and secretion of testosterone; can also make the gonadal function is low; direct spinal reflex center, inhibit penile erection and ejaculation; damage the spermatogenic function of the testes, directly causing an increase in various forms of deformed sperm. Seven, drivers Professional drivers must sit in the driver’s seat every day, maintaining a posture of sedentary driving, part of the car temperature, poor heat dissipation in the scrotum, long-term compression, when the sperm long-term trapped in a stuffy, non-ventilated environment, the mobility will be reduced. Eight, teachers Long standing aggravated varicocele affects sperm development thus leading to infertility. Nine, IT industry Often in a sedentary, urine-holding work state, prone to prostatitis and testicular spermatogenesis disorders. Exposure to ionizing radiation can also have an effect on the spermatogenic function of the testicles. It tends to cause infertility. From the above occupations, it is easy to see that the prevention of infertility, should do a good job in daily life self-protection, not alcohol, less spicy, stimulating food, do not stay up late, hold urine, drink more water, try to avoid sedentary, standing, to combine work and rest, reduce the contact with electronic products and toxic substances, if necessary, consider changing jobs.