From the modern theory of nutrition, there is no such thing as food compatibility. The so-called food compatibility recorded in the past, such as some people’s self-consciousness that the ingredients in food will react and endanger health, has not been scientifically proven, so there is no need to worry too much about the theory of compatibility in food. The misconception of food compatibility mainly lies in the shallow knowledge of the population about food. Most people believe that the main reason for food compatibility is that various ingredients in food can react toxically and harm the human body, such as oxalic acid and calcium can produce stones, pentavalent arsenic and vitamin C can produce arsenic. But in essence, oxalic acid, calcium, pentavalent arsenic and other ingredients in food are very few, even if consumed at the same time, it does not reach the poisonous dose, not to mention the danger to human health. The reason why the theory of food compatibility has been misrepresented may also be related to some cases, such as the reality that there are cases where the body has some adverse reactions after consuming two kinds of food at the same time, and some people may generalize, thus worrying too much about their own lives and the lives of their families, and believe in the so-called theory of food compatibility. But in fact, the adverse reactions caused by the consumption of food are mainly related to the individual’s constitution, such as an allergic body, consuming a large amount of allergic food, but there is no direct relationship with food compatibility. Although there is no clinical food compatibility theory, it is recommended that a reasonable diet should be taken on a daily basis to adequately supplement various nutrients to avoid long-term intake of a single food, resulting in nutrient deficiency and thus inducing various related diseases. In addition, should also pay attention to the amount of food intake, for example, some people believe that crab can not be eaten with pear, because both are cold food, but generally moderate consumption, and will not have a significant impact on the body.