Although the causes of male infertility are complex and varied, there are some male infertility that can be prevented and avoided. In the traditional Chinese concept, not being able to have children is a very sorry thing for the ancestors, although this concept has now changed, but infertility for men is still a heavy burden of thought. If you adhere to good habits, there are some male infertility can be completely prevented and avoided: first, to be vaccinated on time, good personal hygiene habits to prevent various infectious diseases that endanger male fertility, such as mumps, sexually transmitted diseases, etc. Secondly, we should do a good job of sex education and health education from puberty, master certain sexual knowledge, understand male physiological characteristics and health care knowledge, if we find that the testicles have different changes from the usual, such as: swelling, hardening, bumpy, painful, etc., we must promptly seek medical treatment. Third, to strengthen the awareness of self-protection, especially should do a good job occupation. If you are often exposed to radioactive substances, high temperatures and poisons, you must work in strict accordance with the operating rules and protection regulations, do not be negligent, and if you want to have children in the near future, it is best to be able to leave such work for six months before having children. Fourth, we should pay attention to the protection of the testicles and other reproductive organs. 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, so any factors that can raise the temperature of the testicles should be avoided, such as: long bike rides, hot baths, wearing jeans, etc. Fifth, change bad habits, quit smoking and drinking; do not eat too greasy things, otherwise it will affect your libido; also pay attention to avoid contact with toxic substances in life, such as: clothes taken back from the dry cleaners should be placed for a few days before wearing, because dry cleaning agents can affect male sexual function. Sixth, should do a good job of premarital examination, through medical examination, early detection of abnormalities, can avoid the pain after marriage. After marriage, you should often communicate with your wife about the problems encountered in sexual life, cooperate and understand each other, so that many mental impotence or premature diarrhea can be avoided. Seventh, you should cooperate and understand each other in the couple’s life, otherwise sexual dysfunction such as impotence, premature ejaculation after or abnormal ejaculation will easily occur.