[Aim] Cydia pomonella (L.) (Lepidoptera, Olethreutidae) is one of the most important quarantine pests in China. It is widely distributed in the majority of pome fruits cultivated regions in Xinjiang Province and Korla pear is its major host. In this study, the control technology of sex pheromone of C. pomonella was assessed in Korla pear field of Xinjiang. [Method] Occurrence and damage characteristics of C. pomonella in Korla pear plantations in Xinjiang were analyzed according to continued monitoring/surveillance under field conditions. The control effect of sex-pheromone microcapsule and dispenser was compared to the control effect of chemical pesticide through the regular surveys of pheromone trap catches and fruit decay rate. [Result] C. pomonella occurred 2~3 generations per year in Korla pear production area, and overwintering as mature larvae with lower mortality. The adult emergence occurred in mid-April and started to damage in May. The peak of the first generation of adult occurred in early and mid-July, and the peak of the second generation occurred in late August or mid-September. The average trapping numbers of male adults were 2.85, 2.98, and 4.95 per trap per week in sex-pheromone microcapsule and dispenser as well as chemical pesticide treatments, and the average fruit damaged rates were 2.25%, 0.8%, and 0.99%, respectively, which were extremely significantly lower than that in the untreated control area. [Conclusion] Sex pheromone dispenser technology can reduce the number of the first and second generation larvae and adults.