Aflatoxin can cause poisoning and death, extremely toxic, intake of large amounts will cause acute poisoning and life-threatening, micro-continuous intake will cause chronic poisoning induced cancer. Aflatoxin is a highly toxic and highly toxic substances, will damage the human and animal liver, carcinogenicity is also the strongest, when the human body a large number of intake of aflatoxin, will cause acute poisoning, resulting in liver necrosis caused by death, daily trace intake will accumulate in the body to destroy the liver cells, induced liver cancer, but also induced ovaries, kidneys, stomach, and small intestine, mammary glands, parts of the cancer. Aflatoxin mainly through the contamination of food against the human body, including plant and animal food, grain and oil food, such as rice, millet, peanuts, cow’s milk, pork, etc.; In addition, the family homemade fermented food can also be tested with aflatoxin. Daily attention should be paid to food hygiene, do not eat moldy expired food, do not be negligent, to avoid damage to health.