Abstract:Objective:To sort out the main orginal plants of Chinese drugs Zhiqiao and Zhishi.Method:Investigating the medicinal plant resources in the growing area and conducting morphological identification of more than 40 pieces of these two commercial drugs.Result:A taxonomic table, a distribution table and a commercial drug identification table are given.Convlusion:The Chinese medicinal plants Zhiqiao and Zhishi originated from Citrus aurantium and its varieties C.aurantium "Xiucheng", C.aurantium "Xiangcheng" and Poncirus trifoliata × C. aurantium, some other plants from Citrus genus and Poncirus trifoliata are taken as the origin of Zhiqiao and Zhishi only in a few areas.