Both big black beans and small black beans belong to black beans. Although both are beans and both are called black beans, their effects are different, but eating more of them is beneficial to people's health. Small black beans have diuretic effect, and people with urinary system problems can eat more. And big black beans can tonify the kidney, and people with weak waist and knees and easy fatigue can eat more big black beans. So the functions of the two are different. The effect of small black beans is less than that of big black beans, so it is recommended to buy big black beans to eat.

In fact, black beans and small black beans are the same thing, but they are called by different names. Most people call black beans black beans.

Black beans are the valley of the kidney and enter the kidney. Has the functions of invigorating spleen, promoting diuresis, reducing swelling and lowering qi; Nourishing kidney yin, moistening lung dryness, controlling wind-heat and promoting blood circulation and detoxification; Anti-night sweats, blackening hair and prolonging life. Modern pharmacological studies have confirmed that black beans are rich in protein, lecithin, fat and vitamins, as well as melanin and nicotinic acid.

Eating black beans often can soften blood vessels, moisturize skin and delay aging. Especially for patients with hypertension and heart disease.

Black bean and big black bean are the same species, but their application scope is somewhat different. Small black bean is usually used as food. Almost every family has big black bean in daily life, and it can also be used as stone, but it is more used for medicine. Big black bean has always been used for tonifying kidney. Traditional Chinese medicine has always been tangible and complementary. The shape of big black bean looks like kidney, and through the research of contemporary experts, it is found that the ingredients of big black bean have the effect of tonifying kidney. It is very good to make porridge with big black bean and Lycium barbarum.