As the saying goes, “Eat flowers in spring, leaves in summer, fruits in autumn, and roots in winter.” Root vegetables are vegetables with fleshy roots as the edible part, including sweet potatoes, radishes, yams, potatoes, etc. Compared with other types of vegetables, root vegetables have lower pesticide residues, are inexpensive, and are rich in nutritional value. Winter, is a large number of root vegetables listed in the season, more should eat these “big”. 1, sweet potatoes: fill the deficiency, benefit the strength, strengthen the spleen and stomach, strong kidney yin. Sweet potatoes contain vitamin A, B, C, E and potassium, iron, copper, selenium, calcium and more than 10 kinds of trace elements, high nutritional value. Eat some sweet potatoes in winter, you can maintain the elasticity of blood vessels, and sweet potatoes contain a lot of dietary fiber, can stimulate the intestines, enhance peristalsis, laxative detoxification, especially for age-related constipation has a better effect. In addition, a study shows that sweet potatoes have a good anti-cancer effect, the effect of the first anti-cancer food. 2, radish: cooked sweet like taro, raw crisp like pear. Old disease to eliminate stagnation, the strange function of the real product title. The “Compendium of Materia Medica” said that radish can be “big down the gas, eliminating grain and in, to go to the evil heat.” The folk also have “eat radish in winter and eat ginger in summer, without the doctor to prescribe”. Radish is rich in nutrients, rich in carbohydrates and a variety of vitamins, including vitamin C content is 8-10 times higher than that of pears. Radish also contains minerals and protein. Radish does not contain oxalic acid, not only does it not combine with calcium in food, but it is more conducive to calcium absorption. B vitamins and potassium, magnesium and other minerals in the radish can promote intestinal peristalsis, help the elimination of waste in the body. 3, yam: benefit the kidney, spleen and stomach, stop dysentery, phlegm and saliva. Yam contains amylase, polyphenol oxidase and other substances, is conducive to enhancing the digestive and absorption functions of the spleen and stomach. Yam contains mucus protein, which has the effect of lowering blood sugar and is suitable for diabetic patients. There are also foreign literature reports, yam can effectively prevent prostate enlargement. 4, potatoes: and stomach and regulate the middle, strengthen the spleen and benefit the qi. Potatoes contain a lot of vitamin B and vitamin C, etc., for the treatment of stomach ulcers, constipation has a certain effect. It can also prevent fat deposits in the cardiovascular system, maintain the elasticity of blood vessels, and help prevent the occurrence of atherosclerosis. In addition, cutting potatoes into thin slices and applying them externally can be a good way to eliminate edema.