Abstract:Objective:To make clear the botanical origin of medicinal Uncaria distributed in China and the situation of its use in folk medicines.Methods:Collecting data and making on the spot investigation.Results:There are thirteen medicinal plants which belong to Uncaria genus,and ten of them are commercially available.A clear idea was obtained of their geographical distribution,distribution features and practical experiences in folk application.Conclusion:This investigation is helpful in further researching and exploring the resources of Uncaria for medical use,as well as provides a scientific basis for production,management and safe use of crude drugs.