A use of a burdock extract is for manufacturing a medication of benigh prostatic hyperplasia (BPH). The burdock extract is obtained by extracting a sample of burdock seed using an extractant being water or an aqueous ethanol solution.一種牛蒡萃取物的用途,係用以製備治療良性攝護腺肥大症的藥物;其中,該牛蒡萃取物係由一萃取溶劑萃取一牛蒡子樣品所獲得,該萃取溶劑為水或一乙醇水溶液。