Black rice has the functions of nourishing yin and tonifying kidney, invigorating spleen and warming liver, enriching blood and benefiting qi, improving intelligence and strengthening brain, enhancing metabolism, improving eyesight and promoting blood circulation, treating juvenile gray hair and nourishing deficiency of pregnant women and parturients. It has therapeutic effect on anemia, hypertension, neurasthenia, chronic nephritis and other diseases. Trace elements such as vitamin B 1 (twice that of ordinary rice), B2, B6, B 12, iron (seven times that of ordinary rice), calcium, phosphorus, selenium, magnesium, copper and zinc are all higher than those of ordinary rice.