The invention relates to a pesticide composition, and effective components of the composition comprise oligosaccharins and ethylicin. The mass percentage between oligosaccharins and ethylicin is 1:80-80:1, and the content of oligosaccharins and ethylicin in the compound preparation is 1-80%. A method widely-known by technical personnel in the field is employed in order to prepare suspending agent, wettable powder, water dispersible granule, emulsion in water, micron emulsion and other dosage forms. The pesticide composition can be used for controlling a plurality of virus diseases of a plurality of crops, such as tobacco mosaic virus disease, cucumber mosaic virus disease, maize dwarf mosaic virus disease, rice stripe disease, rice dwarf virus disease, and the like.