The present invention relates to a kind of Pesticidal composition, contain at least one of (a) group constituted selected from iminopyridine derivative and its acid-addition salts shown in the following general formula (1) noxious organism control agent and selected from least one of (b) group being made of the noxious organism control agent other than (a) group noxious organism control agent as effective component. [in formula (1), Ar indicates the pyridyl group or pyrimidine radicals that can be replaced by halogen atom, the C1~C4 alkyl that can be substituted with halogen atoms, alkoxy, hydroxyl, cyano or the nitro that can be substituted with halogen atoms R1 indicates hydrogen atom or C1~C6 alkyl Y indicates hydrogen atom, halogen atom, hydroxyl, the C1~C6 alkyl that can be substituted with halogen atoms, C1~C6 alkoxies, cyano, formoxyl or the nitro that can be substituted with halogen atoms And R2 indicates the C1~C6 alkyl being substituted with halogen atoms].
