射干为常用中药,始载于《神农本草经》,列为下品。射干味苦、性寒,功效为清热解毒,消痰,利咽。用于热毒痰火郁结,咽喉肿痛,痰涎壅盛,咳嗽气喘等症。射干为鸢尾科植物射干的干燥根茎。主产于河南、湖北、浙江、安徽、江苏等地。湖北产的射干属道地药材。射干呈不规则的结节状,长3~10cm,直径1~2cm。表面黄褐色、棕褐色,皱缩,有排列较密的环纹,上 Shegan as a commonly used traditional Chinese medicine, first contained in “Shen Nong’s Materia Medica”, as the next product. Shegan bitter, cold, efficacy of detoxification, Phlegm, Liyan. For heat poisoning phlegm stagnation, sore throat, sputum 壅 Sheng, cough and asthma embolism. Dried stems iris stem shoot dry roots. The main production in Henan, Hubei, Zhejiang, Anhui, Jiangsu and other places. Hubei produces Shegan is a medicinal material. Shegan showed irregular nodular, long 3 ~ 10cm, diameter 1 ~ 2cm. Surface brown, brown, wrinkled, densely arranged rings, on