Talking about food acidity and alkalinity is not recommended, and no authoritative literature on the definition of food acidity and alkalinity could be found. Eating peanuts in moderation can replenish the body with nutrients. In some elaborations, food acidity and alkalinity of food refers to food ash, which is the oxides of some elements left after the burning of food, which is quite different from the nature of metabolites of food after digestion, absorption and utilization in the body. Misinterpreting the acidity or alkalinity of food ash as the acidity or alkalinity of food in the metabolic process is not scientific. Peanuts, as food, enter the digestive system after human consumption, and the metabolites formed can be of different natures. Peanuts are rich in fat, niacin, but also contains protein, crude fiber, carbohydrates, zinc, selenium, iron, phosphorus, potassium, magnesium, vitamin C, vitamin E, folic acid and other nutrients, eaten in moderation can be supplemented with some of the nutritional requirements of the human body.