射干为鸢尾科植物射干的干燥根茎。其味苦,性寒,归肺经。清热解毒、消痰、利咽,常用于咽喉肿痛、咳嗽气喘等症。炮制时,除去杂质,洗净,润透,切薄片,干燥。射干饮片呈不规则形或长条形的薄片。外表皮黄褐色、棕褐色,皱缩,可见残留的须根和须根痕,有的可见环纹。切面淡黄色或鲜黄色,具散在筋脉小点 Dried stems iris stem shoot dry roots. Its bitter, cold, to the lungs. Detoxification, Phlegm, Liyan, commonly used in sore throat, cough and asthma embolism. Processed, remove impurities, wash, Run through, cut thin slices, dry. Sheung Shui Pieces were irregular or long strip of sheet. Outer skin tan, brown, shriveled, showing the residual fibrous root and fibrous roots, and some can be seen ring pattern. Pale yellow or bright yellow, with scattered tendon dots