Male infertility has become a major problem prevalent in society and plagues many families. Necrospermia is one of the causes of male infertility. It brings great harm to the body and mind of male friends. What are the prevention methods? What are the prevention methods? 1, to be vaccinated on time: good personal hygiene habits. To prevent a variety of infectious diseases that endanger male fertility, such as mumps, sexually transmitted diseases, etc. 2, often exposed to radioactive substances: high temperature and toxic substances. Be sure to operate in strict accordance with the operating regulations and protective statutes, do not be negligent! If you want to have children in the near future you must stay away from these substances as soon as possible. 3, to master a certain amount of sexual knowledge: to understand the male physiological characteristics and health care knowledge. If you find that the testicles have different changes from the usual, such as: swelling, bumpy, painful, etc. must be promptly diagnosed and treated. 4, the testicles are a very delicate organ: its optimal working temperature is about 1 degree lower than the human body temperature, if the temperature is high it will affect the production of sperm. Therefore, any factors that can raise the temperature of the testicles should be avoided, such as long bike rides, hot baths, and wearing jeans.