The word “fire” is a folk saying, there is no such concept in nutrition, in general, moderate consumption of citrus does not cause discomfort to the body. Citrus is one of the common fruits, its water is more sufficient, and contains a variety of minerals and vitamins needed by the human body, such as every 100g of citrus contains about 15g of carbohydrates, 197mg of potassium, 17mg of phosphorus, 11mg of calcium, 15mg of vitamin C, 5mg of vitamin P and so on, eating citrus in moderation will help to replenish the body with the above nutrients. Citrus can be consumed directly or with other foods, but diabetic patients should be cautious of eating, the general population need to eat in moderation, so as not to eat a lot of gastrointestinal discomfort.