A PESTICIDAL AEROSOL COMPOSITION, CONTAINING 3-PHENOXYBENZYL ESTER COMPOUND REPRESENTED BY FORMULA (I): WHEREIN, X REPRESENTS A HYDROGEN ATOM OR A CYANO GROUP Z REPRESENTS A HYDROGEN ATOM OR A FLUORINE ATOM AND R1 AND R2 EACH INDEPENDENTLY REPRESENT A HYDROGEN ATOM, A C1-C3 ALKYL GROUP THAT MAY BE SUBSTITUTED WITH HALOGEN ATOMS, OR A HALOGEN ATOM 4-METHOXYMETHYL-2, 3, 5, 6-TETRAFLUOROBENZYL 3(2-CYANO-1-PROPENYL)-2, 2-DIMETHYLCYCLOPROPANECARBOXYLATE, AN ORGANIC SOLVENT, AND A PROPELLANT HAS AN EXCELLENT PESTICIDAL ACTIVITY.