According to the statistics of the monitoring data of larch caterpillar lamp attraction, it is predicted that mid-July in the Bila River area will be the peak period of adult feathering of larch caterpillars. In order to effectively reduce the density of its insect population, since mid-to-early July, the 125 forest class of the Forest Defense Station of the Bila River Forestry Bureau has continued to use hanging black lights and frequent vibration lamps to trap adult larch caterpillars for secondary control. According to the terrain and forest stand characteristics of the place of occurrence, the station divides the work of personnel, every 6 people in a group, divided into two groups, the lighting time is from 8:00 to 12:00 every night, and the time and number of lamps on each lamp larch caterpillar are recorded in detail every day, so far, this work has been fully completed, achieving the expected control effect, and effectively reducing the density of the adult larch caterpillar. (Gao Ronghong)