Black buckwheat for food, does not have the role of drugs, but contains high nutritional value, can supplement the human body. Poor digestion is not recommended for consumption, may lead to aggravation of the condition, black buckwheat allergy should not be consumed. Black buckwheat, belonging to a variety of buckwheat, belonging to the grain, grown in alpine areas, has a high nutritional value. Buckwheat according to its shape and characteristics can be divided into sweet buckwheat and buckwheat two kinds of buckwheat, sweet buckwheat contains a high starch content, taste and smell better. Black buckwheat flavor is lighter, slightly bitter, but the nutritional value of sweet buckwheat higher. 100 grams of black buckwheat contains 316 calories, 66 grams of carbohydrates, 9.7 grams of protein, 2.7 grams of fat, 5.8 grams of fiber. Black buckwheat is rich in amino acids, and rutin and selenium, as well as a large amount of dietary fiber, carbohydrates, minerals and trace elements. Nutritional composition are higher than rice, wheat, corn and other staple foods. It is suitable for obese people, three high people and other people to eat. But it is not recommended that people with poor digestion, allergic to black buckwheat ingredients.