A composition comprising a carboxamide compound represented by formula (I): wherein R1 represents a hydrogen atom or a methyl group, and R2 represents a methyl group, a difluoromethyl group or a trifluoromethyl group, and abamectin is provided by the present invention, and this composition has an excellent pesticidal effect.本發明提供一種殺蟲組成物,其包含以式(I)表示之羧醯胺化合物:其中R1表示氫原子或甲基,及R2表示甲基、二氟甲基或三氟甲基,及阿巴汀,且此組成物具有極佳殺蟲效果。