It is reported that at present, sub-health population accounts for 70%, which is the main body of treatment. The World Health Organization put forward the concept of four cornerstones of health, namely, reasonable diet, moderate exercise, smoking cessation and alcohol restriction, and psychological balance, among which reasonable diet ranks first, which shows its importance. Scientific diet is the foundation of health. Nowadays, some magical doctors talk nonsense about nutrition, fool health and confuse right and wrong, which makes many people more and more confused about food nutrition and don't know what real nutrition is. Blind imitation will bring many new health problems and endless harm. According to her analysis, the main nutritional misunderstandings are: partial eclipse and picky eaters; The staple food is too thin; Eat more vegetables and eat less; Eat electrolyzed water, alkaline water, and even domestic water (cooking, soup, porridge) with this water and so on. Eat more vegetables and eat less, resulting in the amount of meat dishes has exceeded the staple food. This rich dietary structure provides too much energy and fat while the dietary fiber is too low, which is an important factor for the high incidence of chronic diseases in China and should be highly valued by people. Her nutritional prescription for the public is that adults should eat about 250 grams of staple food every day, including 50- 100 grams of coarse grains, which provide 50%-60% of the body's calories and protein.