Abstract: An investigation of forest pests were conducted in Emeishan City from April 2016 to May 2017. The result showed that there are 202 species of pest, including 117 insects, 79 diseases, 4 pest plants,1 species of mouse and 1 species of other forest pest. The species, hosts and distribution of forest pests in were basically identified in Emeishan City, which could provide comprehensive, accurate and objective basic information for forestry pest monitoring, early warning, quarantine, disaster prevention and mitigation and emergency relief work.