[Objective]The aim was to study the control effect of different sex pheromones and trapping lamps against main pests in tobacco. [Method]Control effect of sex pheromone of different matrix lures and Jiaduo trapping lamp against Spodoptern litura,Helicoverpa assulta and Helicoverpa armigera in tobacco in Tengchong of Yunnan were determined and compared,and the control cost was evaluated. [Result] The use of insect sex pheromones and insecticidal light traps had certain effect against S. litura and H. armiger. The trapping effect of sex pheromone traps was better than that of Jiaduo trapping lamp,and the PVC matrix lure had better performance than rubber matrix lure,which had strongest capturing capacity,continuous control effect and significant effort against S. litura. The traps with different settled densities and hanging heights also had different trapping effect against S. litura and H. armiger,and the hanging height of 100 - 150 cm from ground was the best; as the cost was considered,the cost of the area with low density of traps was the lowest,which was reduced by over 44% than conventional chemical control area. [Conclusion]It is safe and effective to use sex pheromone and insecticidal light traps to control S. litura and H. armigera,and it is a green environmental protection biological physical control technology,having extended application prospect in large area. [Objective] The aim was to study the control effect of different sex pheromones and trapping lamps against main pests in tobacco. [Method] Control effect of sex pheromone of different matrix lures and Jiaduo trapping lamp against Spodoptern litura, Helicoverpa assulta and Helicoverpa armigera in The results of The use of insect sex pheromones and insecticidal light traps had certain effect against S. litura and H. armiger. The trapping effect of sex pheromone traps was better than that of Jiaduo trapping lamp, and the PVC matrix lure had better performance than rubber matrix lure, which had strongest capturing capacity, continuous control effect and significant effort against S. litura. The traps with different settled densities and hanging heights also have different different trapping effect against S. litura and H. armiger, and the hanging height of 100 - 150 cm from Ground was the best; as the cost was consider ed, the cost of the area with low density of traps was the lowest, which was reduced by more than 44% than conventional chemical control area. [Conclusion] It is safe and effective to use sex pheromone and insecticidal light traps to control S. litura and H. armigera, and it is a green environmental protection biological physical control technology, having extended application prospect in large area.