Brown rice is the caryopsis of rice after rice husk is removed from the outer protective layer. The rice grains with complete inner protective layer (pericarp, seed coat and nucellar layer) have rough taste and dense texture because of more crude fiber and bran wax in the inner protective layer, which requires time to cook, but its slimming effect is remarkable. Compared with ordinary refined white rice, brown rice is rich in vitamins, minerals and dietary fiber, and is regarded as green and healthy food. 60%-70% of vitamins, minerals and a large number of essential amino acids in rice are accumulated in the outer tissue, while the delicate white rice we usually eat is white and delicate, and its nutritional value has been lost during processing. In addition, the vitamins and minerals in the outer layer are further lost during cooking, and the rest are mainly? The nutritional value of carbohydrates and some protein is much lower than that of brown rice. The results show that the calcium content in brown rice is 1.7 times that of polished rice, the iron content is 2.75 times that of polished rice, the nicotine content is 3.2 times that of polished rice, and the vitamin B 1 gundam 12 times. Vitamin E in brown rice is 10 times that of polished rice, and cellulose is as high as 14 times. Compared with whole wheat, brown rice contains little protein, but protein is of better quality, mainly protamine. Amino acid composition is relatively complete, which is easy to be digested and absorbed by human body, but lysine content is less, containing more fat and carbohydrates, which can provide a lot of heat for human body in a short time. Modern nutrition research has found that vitamin B and vitamin E in rice bran and brown rice germ can improve human immune function, promote blood circulation, help people eliminate depression and irritability, and make people full of vitality. In addition, trace elements such as potassium, magnesium, zinc, iron and manganese in brown rice are beneficial to prevent cardiovascular diseases and anemia. It also retains a large amount of dietary fiber, which can promote the proliferation of intestinal beneficial bacteria, accelerate intestinal peristalsis, soften feces, and prevent constipation and intestinal cancer; Dietary fiber can also combine with cholesterol in bile to promote the discharge of cholesterol, thus helping patients with hyperlipidemia to lower their blood lipids. Eating brown rice is especially beneficial to diabetics and obese people. Because the carbohydrate in it is wrapped by crude fiber tissue, the digestion and absorption speed of human body is slow, so it can control blood sugar well; At the same time, trace elements such as zinc, chromium, manganese and vanadium in brown rice are beneficial to improve the sensitivity of insulin and help people with impaired glucose tolerance. Japanese research has proved that the glycemic index of brown rice is much lower than that of white rice, and it has a better satiety when eating the same amount, which is conducive to controlling food intake and thus helping obese people lose weight. 1. Brown rice has a good effect on patients with obesity and gastrointestinal dysfunction, and can effectively regulate metabolic and endocrine abnormalities in the body; 2. Brown rice can treat anemia; 3. Brown rice can treat constipation and purify blood, so it has the function of strengthening the body; 4. Vitamin E rich in germ can promote blood circulation and effectively maintain systemic function; 5. Brown rice can normalize cell function and maintain endocrine balance; 6. Brown rice has the function of connecting and decomposing radioactive substances such as pesticides, thus effectively preventing the human body from absorbing harmful substances and achieving the function of preventing cancer. In Compendium of Materia Medica, it is believed that rice buds can relieve annoyance, invigorate qi, strengthen spleen and stop diarrhea, which is very beneficial to human body. Chinese medicine believes that brown rice is sweet and warm, which can strengthen the spleen and nourish the stomach, tonify the middle energizer and replenish qi, harmonize the five internal organs, soothe the nerves and help digestion and absorption.