Astragalus membranaceus, as a traditional medicinal material, is used to treat deficiency of vital energy, fatigue, inappetence, loose stool, sinking of qi of middle-jiao, chronic diarrhea, rectocele, hematochezia, metrorrhagia, spontaneous perspiration due to exterior deficiency, edema due to deficiency of vital energy, internal heat and thirst, blood-insufficiency, hemiplegia, arthralgia, numbness, carbuncle and ulcer.