Abstract: The occurrence and biological characteristics of Anoplophora nobilis were systematically obsereved and investigated in Xining District.A preliminary control test of Anoplophord nobilis was taken by injecting insecticides into the tree trunk.The results showed that Anoplophora nobilis had one generation in two years, and it's harmful to Populus, Salix, Ulmus and Fraxinus.Injecting insecticides into the tree trunk had certain effect for controlling the pest.