Kidney belongs to water, black in color (including deep blue), and likes to be warm and moist.

Black represents foods such as black fungus, black rice, black beans, black sesame seeds, mushrooms, shrimps, shellfish and black dates.

Black rice: nourishing yin and tonifying kidney, enriching blood and benefiting qi, increasing intelligence and brain, and strengthening metabolism.

Black beans: tonifying kidney, strengthening bones and muscles, warming stomach, improving eyesight, invigorating vitality, promoting diuresis and detoxifying.

Black sesame: nourishing kidney, nourishing brain and moistening lung, nourishing blood and blackening hair, and preventing aging.

Black dates: enhance the body's immunity.

Auricularia auricula: it can clear the intestines and cleanse the stomach, and enhance the body's immunity.

Melanin: ① It can improve the metabolism closely related to kidney, bladder and bone, and enhance the function of reproductive system, which is beneficial to kidney and bladder. ② Scavenging free radicals in the body. ③ Anti-oxidation and blood lipid lowering. ④ beauty beauty. ⑤ It can promote renal function. ⑥ tonify kidney and blacken hair. Therefore, kidney should eat more black food.

Black food also includes: laver, kelp, black-bone chicken, Nostoc flagelliforme, blackcurrant (blackcurrant), sea cucumber, black lobster sauce, black mulberry, longan pulp, black grapes, black pine nuts, black ant, snakehead, turtle, black buckwheat, black lentils, rye, black millet, preserved eggs, loach, squid, etc.