Black rice and purple rice are precious varieties of rice, all belong to the glutinous rice category, in the nutritional composition of the two are basically the same. With black rice or purple rice porridge bright and fragrant, soft and palatable, because of its rich nutrients, has a very good tonic effect, so it is known as "blood rice", "longevity rice". China's folk have "black must be complementary" said.

Black rice contains protein is 0.5 to 1 times the rice, containing manganese, zinc, copper and other inorganic salts are mostly higher than 1 to 3 times, but also contains rice lack of vitamin C, chlorophyll, anthocyanin, carotene and cardiac glycosides and other special ingredients, so black rice is more nutritious than ordinary rice. Eating black rice has an appetizer, warm liver, spleen, eyesight, blood, slippery astringent essence of the function of juvenile gray hair, women's post-partum weakness, post-disease frailty, as well as anemia, kidney deficiency have a very good effect of nourishment.