Abstract: The virulence and control effects of three insecticide mixtures, eichlorvos at a dilution of 1000 + deltamethirn at a dilution of 2000, cyhalothrin at a dilution of 1000 + pirimicarb at a dilution of 1000 and omethoate at a dilution of 1000 +Mieyaning at a dilution of 1000 were experimented both at plots and indoors and compared with the corresponding single insecticides.The results showed that eichlorvos at a dilution of 1000 + deltamethirn at a dilution of 2000 had good synergistic effects, the cost of the mixture was between the costs of two single ones.