Lotus root is a relatively common ingredient, the effect is to eliminate food and stop diarrhea, appetizer and clear heat, as well as the effect of replenishing qi and nourishing blood. There are several taboos against eating lotus root: first, weak patients, especially patients prone to diarrhea is not recommended to eat raw lotus root, otherwise it is difficult to digest, will aggravate the weakness of the spleen and stomach. Second, don’t use iron pot to cook lotus root, because iron will cause the color of lotus root to change, and affect the quality. Third, the cut lotus root can not be directly stored, otherwise it will lead to discoloration, affecting the nutrition. Fourth, soybean is best not eaten with lotus root, because it will affect the body’s absorption of nutrients, the absorption of iron will also be affected. Fifth, lotus root for pregnant women must be careful to apply, do not eat too early, or there will be some related diseases.