Piece of Chinese medicine refers to traditional Chinese medicinal material is processed according to the theory of traditional Chinese medicine and it is the traditional Chinese medicinal directly applied to clinical medicine.Authenticity identification of piece of Chinese medicine is an important guarantee to ensure the safety and effecacy of clinical drugs and to ensure the health and safety of the people.The common method of adulterating of piece of Chinese medicine includes doping the sand and stone,non medicinal parts mixing with the medicinal part and forgery and so on;the common method to identify piece of Chinese medicine includes experienced identification,microscopic identification,extract identification method,source identification,physicochemical identification,biological identification and so on.The knowledge of authenticity identification for piece of Chinese medicine is an important theory of technology,and grasping the basic identification method and skill of traditional Chinese medicine ensure the safety and effectiveness of clinical medication.