2.State Key Laboratory of Dao-di Herbs， National Resource Center of Chinese Materia Medica，China Academy of Chinese Medical Sciences， Beijing 100700， China)

    [Abstract] The survey of traditional knowledge related to Chinese materia medica resources is the important component and one of the innovative aspects of the fourth national survey of the Chinese materia medica resources. China has rich traditional knowledge of traditional Chinese medicine (TCM) and the comprehensive investigation of TCM traditional knowledge aims to promote conservation and sustainable use of Chinese materia medica resources. Building upon the field work of pilot investigations ......