A 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 TRIFLUORORNETHYL GROUP, AND ONE OR MORE PYRETHROID COMPOUNDS SELECTED FROM GROUP (A) CONSISTING OF TEFLUTHRIN, LAMBDA-CYHALOTHRIN, CYPERMETHRIRI, BETA-CYFLUTHRIN, PERMETHRIN, DELTAMETHRIN AND BIFENTHRIN IS PROVIDED BY THE PRESENT INVENTION, AND THIS COMPOSITION HAS AN EXCELLENT PESTICIDAL EFFECT.