Many people ask why there are so many infertile couples these days. The rate of male infertility in particular is increasing every year. In the last 50 years, the male sperm count has almost halved. At the same time, the quality of human sperm has been quietly declining. The proportion of malformed and poor quality sperm is increasing, and their vitality, penetration, and conception rates are declining, with the proportion of male infertility now reaching over 40%. Chemical pollution, radiation, electromagnetic waves, noise and other deterioration of the external environment, human sperm is like a fierce killer. Among the people suffering from infertility, there are more significant occupational characteristics. Engaged in radioactive work, high-temperature work, as well as contact with pesticides, paints, coatings and other toxic substances such as mercury, lead, phosphorus, etc., the long duration of exposure as well as unprotected measures will make the harmful substances have a direct impact on the reproductive system. Drivers, carpenters, electricians, plumbers, etc., are all at high risk of infertility. In addition, modern society, work, speed up the pace of life, part of the work pressure, mental tension, the body is often in a state of fatigue, and some people work, life is not regular, socializing, often alcoholism, etc., which will affect the secretion of androgens, which will lead to the decline in the quality of sperm, the number of reduced. In addition, indiscriminate use of drugs, malnutrition, widespread sexually transmitted diseases, drug addiction, smoking addiction, etc., are considered to be the invisible killer of sperm. Modern people live in dirty air for a long time. In the face of worsening environmental pollution, we should strengthen our self-protection ability and eat more anti-pollution foods such as carrots, garlic, seaweed and green beans, as well as more fresh vegetables. Prevent heat radiation and electromagnetic waves from attacking the organism, such as not using overheated water for bathing and paying attention to preventing heatstroke and cooling. Paying attention to good dietary and living habits are good ways to avoid the decline of sperm quantity and quality.