Eating more alkaline foods does not have any special benefits for the body. It is necessary to take care of a comprehensive and balanced diet on a daily basis, and not to eat only or an excessive amount of alkaline foods. In food chemistry studies, food can be categorized as alkaline or acidic according to the chemical properties of the ash obtained from burning food. If the food ash contains relatively more minerals such as potassium, sodium, calcium and magnesium, the food can be considered alkaline. Various vegetables, fruits, beans, milk and nuts such as almonds and chestnuts are alkaline foods. These foods contain a lot of crude fiber, which can promote intestinal peristalsis and accelerate metabolism; such foods are also rich in vitamins and trace elements, which can promote physical growth and development. It should be noted that the acidity and alkalinity of the blood is the result of the comprehensive balance of various metabolic products, relying on the acidity and alkalinity of food will not change the body’s acid-base balance. Therefore, there is no need to deliberately pursue the acidity or alkalinity of food in practical life. It is recommended to pay attention to the nutritional matching of three meals a day in daily life to absorb comprehensive and balanced nutrition, alkaline food is not the more you eat, the better.