Abstract:Objective: To make clear the current situations of wild medicinal plant resources in Xinbin County, and put forward suggestions for the development of traditional Chinese medicine (TCM) resources and the protection of medicinal resources in this area. Method: The survey was conducted through literature consulting and sample plot survey in the survey pattern of representative area-sample plot-sample set-quadrat. In addition, the reserves of medicinal materials were calculated by using the reserves function in relevant technical schemes. Result: A total of 36 plots were surveyed, including six representative areas, namely grasses, meadows, shrubs, coniferous forests, broad-leaved forests, and coniferous and broad-leaved mixed forests, which covered the whole Xinbin County. The investigation involved 536 wild medicinal plants, which belonged to 100 families, including 76 species of asteraceae, 52 kinds of key medicinal herbs, and 31 kinds of special medicinal herbs. On the basis of the classification between key medicinal herbs and special medicinal herbs based on their efficacy, the results showed heat-clearing drugs and exterior-relieving drugs as the majority. According to the calculation of staple herbs, Schisandrae Chinensis Fructus, Dryopteris crassirhizoma, Asarum sieboldii radix and rhizoma and other key and special medicinal herbs had larger reserves. Six new herbs were found in Liaoning Province, in which Adiantum flabellulatum was originally produced in Taiwan and now found in Xinbin, Liaoning Province. And medicine bases within the county were also surveyed, including Ganoderma, A. sieboldii radix and rhizoma, Schisandrae Chinensis Fructus and other authentic herbal medicine cultivation bases. Conclusion: Xinbin County has rich medicinal plant resources. Through the fourth census of TCM resources, Xinbin County's wild medicinal plant varieties and reserves were clear, which provides the basis for the further development of TCM cultivation industry and the promotion of Xinbin County's TCM economy.