Astragalus has the efficacy of tonifying qi, consolidating the surface and nourishing blood, and can be used for qi deficiency, and central qi subsidence (deficiency of qi in the spleen and stomach, with manifestations such as viscera falling down). Astragalus is sweet in flavor and slightly warm in nature. It belongs to lung and spleen meridians. It is used to replenish qi and elevate yang (replenish qi so that yang qi can rise), consolidate the surface and stop sweating (stop sweating by consolidating the surface of the muscle), promote diuresis and eliminate swelling (relieve urination and eliminate edema), promote the production of fluid and nourish blood (replenish the body’s water and blood), promote the circulation of stagnation and paralysis, support the drainage of toxin and pus (expel pus and toxin from the body), and converge sores and regenerate the muscle (help the sores to heal more quickly, and promote the growth of new flesh). Astragalus is used for qi deficiency and weakness, loose food (fecal matter is thin and not shaped), the sinking of qi in the middle, prolonged diarrhea and prolapse of the anus, hemorrhage and leakage, surface deficiency and spontaneous sweating (due to the weakness of the surface of the muscles and frequent sweating naturally), qi deficiency and edema, blood deficiency and atrophy, hemiplegia (one side of the limbs can not be free to move), paralysis and numbness, carbuncle and gangrene (a kind of poisonous sores, which occurs on the surface of the body, the limbs, the viscera of the acute suppurative disease) is difficult to ulcerate for a long time, not convergence, and so on. Patients are advised to use the medicine under the guidance of a doctor.