At the 2021 media communication meeting on scientific interpretation of food safety and health hot spots held on January 6, the popular science department of China Association for science and technology and China Society of food science and technology jointly released the 2021 list of food safety and health rumors, refuting 10 widely spread rumors and restoring the truth at the same time. Rumour is that novel coronavirus pneumonia can be killed by garlic. Truth: allicin has bactericidal and bacteriostatic effects, but garlic cannot be equated with drugs. Moreover, novel coronavirus pneumonia novel coronavirus pneumonia is not available in the literature. The second rumor is that "0 sucrose" is "sugar free". Truth: "0 sucrose" means that sucrose is not added during food processing, but it does not mean that glucose, maltose, fructose and other sugars do not exist in the food. Gossip three is that drinking milk for a long time can lead to breast cancer. Truth: according to the World Cancer Research Fund's report on breast cancer, there is no consistent conclusion about the relationship between drinking milk and cancer. China's revised guidelines on dietary guidelines have combed many of the relevant research evidence so far, and concluded that milk intake is not associated with breast cancer risk. Rumor 4 is that eating out of season fruits will lead to precocious puberty. Truth: whether it is seasonal fruit or out of season fruit, fruits planted, preserved and sold according to the specification requirements can be safely eaten. The causes of precocious puberty in children are complex. At present, there is no evidence that eating out of season fruits will lead to precocious puberty. Rumor 5 is that the ingredients of quick-frozen balls are poor and there are many food additives. It's best not to eat them. Truth: quick freezing process is a physical means to maintain food quality at low temperature, which can retain the flavor and nutrition of Meatballs to the greatest extent. Food additives are allowed to be used in quick-frozen balls, but they shall strictly comply with national standards and shall not be used beyond the scope and amount. Products with complete cold chain and intact packaging purchased from formal channels can be safely eaten. Gossip six is often drinking milk tea will drink diabetes. Truth: the causes of diabetes are both complex and complex. There is no evidence that regular consumption of milk tea can lead to diabetes. But for diabetics, it is necessary to control sugar scientifically and control the fat intake reasonably. The milk tea with high sugar content and fat content should be carefully chosen. Rumor 7 is that the rainbow color appears after the beef is cut, indicating that bacteria breed. Truth: the rainbow color after beef cutting is due to a series of small steps produced by muscle fibers during beef cutting. Light interference occurs during light, which has nothing to do with bacteria. Rumor 8 is that Houttuynia cordata contains aristolochic acid, which will damage the kidney and even cause cancer. Truth: Houttuynia cordata does not contain aristolochic acid, and there is no report that Houttuynia cordata causes kidney disease, and there is not enough evidence that aristolochic acid will damage the kidney. Rumor nine is that the small black spots on the cabbage are insect eggs. Truth: the so-called small black spots are a common disease of Chinese cabbage - sesame like spot disease. They are not insect eggs and are harmless to human body. Rumor 10 is that squeezing edible oil is better than leaching edible oil. Truth: pressing and leaching are two different oil preparation processes. As long as it is qualified edible oil produced by regular manufacturers according to standards, consumers should eat it with confidence. (outlook new era)