Abstract: Objective]Preliminary research on the effect of aerially spraying 2; thiacloprid aqueous capsule suspense to control Agrilus mali Matsumura in wild fruit forests in order to provide a theoretical basis for theoretical basis for scientific prevention and control.[Method]The population density of Agrilus mali Mat-sumura were investigated in the survey sample plots and control plots before aircraft spraying.The population density of Agrilus mali Matsumura was also investigated in the survey sample plots and control plots after air-craft spraying.Then the rate of decline of insect and its prevention and cure effect was calculated.[Result]In the aerially spraying area,the reducing rate reached 95 .00;,the control effect reached 65 .82;.[Conclu-sion]The aerially spraying to control Agrilus mali Matsumura with Ultra-low volume in wild fruit forests in Tianshan Mountain has had high efficiency,low cost,and achieved good control effect,which can be applied in large area where Agrilus mali Matsumura seriously damaged wild apple trees.