The main nutritional components of buckwheat is rich of protein; vitamin B; rutin which strengthen blood vessel materials; mineral nutrient; rich plant cellulose etc.. Recent studies show that: regular consumption of buckwheat is not easy to cause obesity, because the buckwheat contains high nutritional value and good balance of plant protein, this protein in vivo is not easily converted into fat, so easily lead to obesity. In addition, contained in buckwheat food fiber is people often eat the staple food product surface and meters of eight times, with the prevention of constipation effect, often eat beneficial to the prevention of colorectal cancer and obesity. Buckwheat is favored in Japan, regarded as an ideal health food, this is because the nutritional value of buckwheat has higher, especially have special health care function of hypertension, coronary heart disease, diabetes, cancer, etc.. Buckwheat has become a popular health food. Buckwheat has prevention and cure hypertension, coronary heart disease role. A large number of flavonoids content in buckwheat flour, especially rich in rutin, rutin has many physiological functions, can maintain capillary resistance, reduce its permeability and fragility, promote cell proliferation and prevent blood cell agglutination, and reducing blood fat, dilating coronary artery, increase coronary blood flow and so on. Buckwheat contains rich vitamins can reduce the body fat and cholesterol, is the treatment of hypertension, cardiovascular disease is an important adjuvant drugs. Moreover, contains some trace elements in buckwheat flour, such as magnesium, iron, copper, potassium etc. These has protective effect on cardiovascular factors. Buckwheat has prevention effects of sugar and glucose in urine. Long term since, the medical community has been looking for a suitable for diabetics dietotherapy food applications, and no side effects in clinical, later, people find buckwheat this ideal antidiabetic food, through the clinical observation, found that patients with diabetes after edible buckwheat, blood sugar, urine sugar have varying degrees of decline, many patients with mild pure edible tartary buckwheat can control the disease. At the same time found that combined hyperlipidemia, edible buckwheat, cholesterol, glycerin three greases were obviously decreased. Further study found that, buckwheat can reduce blood sugar, relevant and chromium contained in buckwheat, chromium can promote insulin plays a role in the human body. The anticancer effect of buckwheat also concern for the medical profession in the world. Scientists think, contains large amounts of magnesium in buckwheat, development of Mg can not only suppress cancer, can also help vasodilation, maintain the normal myocardial function, strengthen the intestinal peristalsis, increase bile, promote the body eliminate waste. A large number of fibers in the buckwheat can stimulate peristalsis increase, accelerate the fecal excretion, can reduce the concentration of intestinal carcinogens, thereby reducing the incidence of colon cancer and rectal cancer. In recent years, due to one-sided pursuit of "eat people", the table is food, almost see buckwheat grains food. This can not be said to be one of the reasons for the increased incidence of disease. Whole grains, each have long, and mainly rely on humans, food intake of nutrients was only omnivorous, it accords with the physiological needs of human body.