Abstract:For understanding of the key application technology of sex pheromone trap for Spodoptera litura (Fabricius), the effects of different factors, such as different sources induced core, different types of traps, attract wick AW different storage periods, traps in different places and so on were studied in the fields.The results showed that the quantitative dynamics of the males trapped by different sources of sex pheromone was similar. The optimum height of the trap from the ground was 1-1.5m. The differences of the quantity of the males by three types of trap were not significant. The sex pheromone stored in 1-2 years significantly reduced the quantity of trapped males, the number of males trapped by the sex pheromone was reduced by more than 60%.