Walnut shell boiled water has no medicinal properties, the main role is to replenish water for the body. Walnut shells are mainly composed of lignin, cellulose and hemicellulose, but also contains walnut quinone, hydrogenated walnut quinone, β-glucoside, tannins and so on. But walnut shells are chemically stable, in acid, alkali, water solubility is very small, the components of which can not be dissolved in water in large quantities, so the nutritional value is not very large, mainly able to provide water for the body and so on. Compared with walnut shells, walnuts are rich in nutrients, and each 100 grams of walnuts contains 654 calories, 15.23 grams of protein, 65.2 grams of fat, 13.7 grams of carbohydrates, 98 milligrams of calcium and 2.91 milligrams of iron. Moderate consumption is beneficial to human health. Usually when you are sick, it is recommended that you seek medical treatment in time, and should not blindly believe in bioprescription or dietary therapy, so as not to delay your condition. People who are allergic to walnuts should not ingest walnut shell boiled water.