Abstract: In order to master the species of longicorn beetles in harming walnut in Yunnan, in this paper, the investigations and collects of longhorn beetles in harming walnuts in Yunnan were carried out using the net-catching and searching methods. The various literature citations, geography distribution and checklists of species were described and provided, and the collected specimens were classified and identified on the basis of morphological characteristics. The results showed that there are 16 species, belonging to 2 subfamilies, 16 genera, including 2 new recorded species in Yunnan.