Abstract: The larvae of Anoplophora nobilis Ganglbauer are borers which infect the stems of poplars and cause a damage of 100% of the trees.Many trees died off in Shaanxi,Gansu,Henan,Hebei Provinces and Ningxia Hui Autonomous Region.They attack more than 10 species of trees with a growth period of three years and prefer in particular several species of Populus,This species requires two years to complete its life cycle and most of the larvae pass two winter in the poplar trunks.The injury of each larva is confined to one tree which may harbour many individuals.The mature larvae pupate in early June and the adult beetle appear from early July to early September.We should put into practice a system of integrated control measures.The damaged trees ought to be cleared away from the forest and seedlings of new species planted immediately.The application of emulsions of Sumithion,Dichlorphos,Malathion,Nuvacron and water solutions of Benzenehexachloride or Acootox to the openings of tunnels and spraying them to the trunks are effective chemical control measurer.