Mother duck is a kind of flesh and blood, which can invigorate qi and nourish blood. This is a good medicated diet. The functions of black beans are: detumescence, moistening lung and drying heat, promoting blood circulation and diuresis, expelling wind and removing arthralgia, nourishing blood and tranquilizing mind, improving eyesight and strengthening spleen, tonifying kidney and nourishing yin, and removing toxic substances; Together, they can be mainly used for invigorating qi, nourishing blood and tonifying kidney.