Pesticide composition with synergistic effect

The invention relates to a pesticide composition with synergistic effect, which has strong pest control function and is applied to chemical protection field of plants in agricultural industry; the pesticide composition is mainly used for preventing lepidoptera from damaging the crops such as rice, vegetables, fruit trees, cotton and the like, the pest control effect is good and the synergistic effect is obvious. The pesticide composition is different from other pesticide compositions, and is the pesticide composition with synergistic effect and is composed of two effective components:fipronil bisamide and emamectin benzoate, and the proportion of raw materials for preparing the pesticide composition are ass follows by weight percentage: 3-20 percent of fipronil bisamide, 1-10 percent of emamectin benzoate, 70-96 percent of additives. The pesticide composition is prepared into wetting powder or water content granular and is used for preventing lepidoptera from damaging the crops such as rice, vegetables, fruit trees, cotton and the like.