The testes are the main male sex organ, whose function is to produce sperm, which unite with the egg to form a new individual, thus ensuring the continuation of the human race. In addition, it also secretes androgens, which stimulate spermatogenesis and the development of male accessory organs and secondary sexual characteristics. Therefore, both congenital developmental disorders and lesions of the testes caused by numerous factors later in life can lead to infertility. So how to prevent male infertility? 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, to master a certain amount of sexual knowledge, understanding of male physiological characteristics and health care knowledge, if you find that the testicles have different changes from the usual, such as: swelling, hardening, bumpy, pain, etc., must be timely diagnosis and treatment; 3, if you are often exposed to 3, if you are often exposed to radioactive substances, high temperature and toxic substances, you must strictly follow the operating rules and protection regulations, do not be negligent, if you want to have children in the near future, it is best to be able to get out of such work for six months before having children; 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, so any factors that can make the testicular temperature rise 5, change bad habits, quit smoking and drinking, no more late nights; 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 the dry cleaning agent will affect male sexual function; 6, to pay attention to premarital The medical examination, early detection of abnormalities, can avoid the pain after marriage. After marriage, you should often communicate with your wife the problems encountered in sexual life, mutual cooperation and mutual understanding, so that many mental impotence or premature diarrhea can be avoided.