In the theory of traditional Chinese medicine, black governs water and kidney governs water. Black food has the function of tonifying kidney, nourishing spleen and stomach, benefiting qi and promoting blood circulation, nourishing liver and improving eyesight. Black rice is also beneficial to the prevention and treatment of dizziness, anemia, gray hair, eye diseases, and weakness of the waist, knees and legs.

Moreover, black rice and black beans contain minerals and trace elements such as starch, protein, fat, vitamins, calcium, phosphorus, magnesium, iron, zinc, molybdenum and selenium. In addition, lysine, arginine, amino acids, tryptophan, etc. It is needed by human body, and it is also found in black rice, which has high nutritional value.