When folk speak of blood replenishment, they usually mean iron replenishment, which means that people with iron-deficiency anemia want to take iron supplements through food. You can cook red beans with pig liver and animal blood to help replenish iron. Pig liver is rich in iron, with 25 milligrams of iron per 100 grams, more than ten times that of spinach. Pig liver can be said to be one of the richest foods in iron. And the iron in pig liver is animal iron, which is very easy to digest and absorb, not easily affected by tannins, oxalic acid and fiber in plants, and the absorption rate is relatively high. You can also use red beans to cook with animal blood products, such as pig’s blood, chicken blood, etc., iron supplementation effect is also better. Food has no role in treating or preventing the disease. If iron deficiency anemia exists and meets the criteria for medication, it should first be treated with medication such as iron dextrose under the guidance of a doctor, and then combined with appropriate food to help the condition recover.