Abstract: 【Objective】 To investigate the occurrence dynamics of Grapholithamolesta and Cydiapomonella in fragrant pear orchard in Korla area, and to evaluate the control effect on fruit borerby mating disruption control technology. The aim to provide basis for the green prevention and control and reducing application of pesticide of Kolra fragrant pear. 【Methods】 The occurrence dynamics of fruit borer was monitored by synthetic sex pheromones. To control the fruit borer in fragrant pear orchard used by mating disruption control technology. We carried out the evaluation on control effect on bymeansof indication as to reduce rates、insect population growth rate andisotropic rate. 【Results】 The results showed that 4 generations of Grapholithamolesta happened in fragrant pear orchard, and its imaginal emergence peak were early-to-middle April、early June、middle July、middle-to-late August respectively. The results showed that 3 generations of Cydiapomonella happened in fragrant pear orchard, and its imaginal emergence peak were late April、early-to-middle July、middle-to-late August respectively.The above all have overlap exists. The experimental result indicated that sex pheromone mating disruption could control the oriental fruit moth effectively. The mating disruption rate and control effect of fruit borer could reach to 99%. 【Conclusion】 The occurrence dynamics of fruit borer were largely consistent in different areas of Korla. The results showed that 4 generations of Grapholithamolesta happened and 3 generations of Cydiapomonella in fragrant pear orchard respectively, the sex pheromone mating disruption could control the oriental fruit moth effectively.