Vegetables are indispensable foods in our daily life, especially our present diet, which generally contains a lot of protein, fat, sugar, monosodium glutamate or salt, but only a small amount of dietary fiber, vitamins and minerals. Therefore, we need to borrow other nutrients from vegetables. Vegetables are rich in B carotene, folic acid, vitamin C, vitamin E and dietary fiber. If there are no vegetables in the diet, the human body will lack these vitamins and dietary fiber. They can help people avoid infection and fight diseases.