A PESTICIDAL COMPOSITION COMPRISING A CARBOXAMIDE COMPOUND REPRESENTED BY FOLLOWING 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 ONE OR MORE CARBAMATE COMPOUNDS SELECTED FROM GROUP (A) CONSISTING OF OXAMYL, THIODICARB, CARBOSULFAN, METHIOCARB AND CARBOFURAN IS PROVIDED BY THE PRESENT INVENTION, AND THIS COMPOSITION HAS AN EXCELLENT PESTICIDAL EFFECT.