Abstract: The toxicities of eight insecticides to Bactrocera sp.adult were evaluated by vial residual method, and those of its pupas were tested by dipping it in the laboratory.The order of toxicities of eight insecticides to the adult of Bactrocera sp.was chlopyrifosbeta-cypermethrinavermectinazadirachtinmatrinecarbosulfan fenpropathrinimidacloprid.The toxicities of five insecticides to the pupas of Bactrocera sp.in the order of decreasing were chlopyrifos methomylphoximdichlorvos trichlorphon.