Red beans are rich in vitamins B 1, B2, protein and various minerals, and have the functions of enriching blood, diuresis, detumescence and promoting heart activation. Eating more can prevent foot swelling and have the effect of losing weight. Its alkaloids can increase gastrointestinal peristalsis, reduce constipation, promote urination, and eliminate edema caused by heart or kidney diseases. Red beans have the effects of clearing heart, nourishing heart, strengthening spleen and tonifying kidney. Adding lotus seeds and lilies has the effects of fixing semen, stopping bleeding and strengthening bones and muscles. , and can treat lung dryness and cough, enhance visceral vitality and enhance physical strength.

Red beans can be made into soup, porridge or summer dessert, which can not only increase appetite, but also supplement potassium ions in large quantities to avoid hypokalemia in summer. In addition, people sweat more and urinate less in late summer, especially the elderly with poor heart and kidney function, which are more prone to edema of both lower limbs. Eating the soup of red beans with shad or carp has a good diuretic and detumescence effect, and is also a good diet for beriberi, ascites and lethargy.