A comparative study was conducted on the different hanging height of traps and different color traps on capture of Asian Corn Borer. The result indicted that the more suitable hanging height of the traps were 1.5m~2.0m, and the trapping effects with five colors did not differ significantly. The sex pheromone traps wereplaced in corn field with different density. The results showed that sex pheromone could trap Asian Corn Borer,and it was feasible applying sex pheromone in forecast. Meanwhile,it could reduce the number of larva and egg of Asian Corn Borer. The density of 10 traps in 1 hectare was better than others, of which the yield was 8.61%more than the control.