防风为常用中药，来源于伞形科植物防风Saposhnikovia divaricata(Turcz.)Schlischk.的干燥根，具发表散风、胜湿、止痛和解痉功能。

Distinguishing Radix Saposhnikova divaricata from its easily confusable Radix Carum buriaticum was carried out ties，by comparing their morphology, microscopic structure and physicochemical properfor their,to provide a basisrespective identification.