In addition to physical diseases, bad habits, occupational, environmental and other factors are closely related to the impact of male fertility a. Unhealthy habits 1, smoking 2, drinking alcohol 3, consumption of cottonseed oil 4, factors that increase the local temperature of the testicles: sedentary, sitz baths, saunas, wearing tight pants. Occupational factors 1, high temperature exposure occupations 2, radiation exposure occupations 3, heavy metal exposure occupations 4, organic solvents, pesticides exposure occupations 5, other: vegetable farmers, welders, etc. Environmental factors 1, environmental endocrine disruptors: currently recognized environmental endocrine disruptors have more than 70 kinds, mainly for plastics, paints, detergents, antiseptics, and petroleum products. 2, climate: spring sperm quality is significantly higher than other seasons. Sperm quality decreases when exposed to cold and hypoxic environments for long periods of time. 3, noise, other factors 1, mental psychological factors: negative emotions affect fertility. 2, age and infertility time 3. 2, age and infertility time 3, obesity.