Purple rice is not black rice, nor is purple rice black glutinous rice. The two cannot be confused. Both of them are treasures in rice and one of the internationally popular "healthy foods" in recent years. Compared with ordinary rice, black rice and purple rice are not only rich in protein and complete in essential amino acids, but also rich in natural black rice pigments, various trace elements and vitamins, especially iron, selenium, zinc, vitamin B 1 and vitamin B2. In China, black rice is commonly known as "medicated rice" and "moon rice". As a tonic for pregnant women and patients with physical weakness, it is also used to improve the physique of pregnant women. It is recorded in Compendium of Materia Medica and Shennong's Classic of Materia Medica that black rice has the effects of nourishing yin and tonifying kidney, invigorating spleen and appetizing, invigorating middle energizer and invigorating qi, and promoting blood circulation and removing blood stasis.

The dietary fiber content in black rice and purple rice is very rich. Dietary fiber can reduce the content of cholesterol in blood and help prevent heart disease caused by coronary atherosclerosis.