Abstract: This paper studied the external morphology and internal structure of the wild and cultivated Saposhnikovia divaricata.The results indicated:the colour of cultivated roots are pale yellow and have many lateral roots.The wild and cultivated Saposhnikovia divaricata have the same internal structute,there are similar number of oil canal and same ratio of phloem to xylem in the perienial wild and two years cultivated Saposhnikovia divaricata.We suggested that the two years cultivated Saposhnikovia divaricta can be used in production.

Key words: Saposinikovia divaricata, Root system, Morphlogy and structure