Abstract:Effects of sublethal doses of insecticides on physiology and behavior of insects draw more and more attentions in recent years. Treatment with sublethal doses of insecticides not only disturb males sensory accuracy for sex pheromone, leading to a wrong integration of and abnormal behavioral response to the exotic signals, but also influence the biosynthesis of sex pheromone by females, leading to changed amounts or ratios among pheromone components and anural calling behavior. These effects on both male and female may decrease the mating rate of female and consequently decrease its population of next generation. Sustained pressure of sublethal dose insecticide year by year may even induce the drift of sex pheromone communication system of insect. Emphasized on pyrethroids and organophosphorus insecticides, the effects of sublethal dose on the sex pheromone communication system and its possible mechanism are reviewed, and several key points for further studies in the area are discussed.