The present invention is related to a pesticide composition for shortening the virus lethal time that comprises 0.01-75% of a ryanodine receptor insecticide or a diamides insecticide and 107-1012 PIB/ml of baculovirus. The pesticide composition of the present invention can effectively reduce the lethal time to the pest compared to the baculovirus alone, and also can increase the control effect of the pest compared to the same concentration of the insecticide.