[Objective]The aim was to explore application of black light and sex pheromone lure to forecast of Spodoptera exigua( Hübner)and Prodenia litura( Fabricius). [Method]The experiments of black light and sex pheromone lure against Spodoptera exigua( Hübner) and Prodenia litura( Fabricius) were carried out in Taicang City for many years,and the control effect of the two methods was analyzed. [Result]The experiments of black light and sex pheromone lure for many years showed that they could both forecast the occ...