Objective:To constitute the research method about Yunnan endemic medica plant—Uncaria yunnanensis KCHsia,which provides a document basis for exploitation. Methods:Combined traditional identification and modern scientific means to study phamacognosy character of Uncaria yunanensis KCHsia for its origin,micro-character and physicochemical properties. Result:The study gives determination of identification methods and key points about Uncaria yunnanensis. Conclusion:The study can be taken as the reference for identificating the species and laying down quality standard of the crude drug.