Chestnuts as a common food, without the efficacy of drugs, which is rich in sugar, protein, B vitamins and other nutrients, with the role of providing energy and nutrients for the body. Protein, fat, sugar is the body’s necessary source of energy, chestnuts per 100 grams of edible portion containing 44.8 grams of sugar, 4.8 grams of protein, 1.5 grams of fat, 1.2 grams of dietary fiber, and chestnuts have a high calorie, can be supplemented with energy. Chestnuts contain fat, unsaturated fatty acids, containing essential fatty acids, the same, can also provide energy for human activities. Chestnuts also contain calcium 15 mg, phosphorus 91 mg, iron 1.7 mg, ascorbic acid 36 mg, niacin 1.2 mg, so the consumption of chestnuts can be supplemented with calcium, phosphorus, iron and other nutrients, suitable for the lack of these elements of the person to eat. But chestnuts are difficult to digest raw, cooked and easy to flatulence, so one should not eat more. Because chestnuts contain high sugar, diabetic patients when less food or do not eat.