The invention discloses a pyrazolyloxyacetic acid compound, a preparation method and use thereof. In the compound with a structural formula (I), X or Y is respectively hydrogen, C 1-4 alkyl, C 1-4 alkoxyl, substituted or non-substituted phenoxyl, halogen, nitryl or trifluoromethyl; and R is hydrogen or C 1-4 alkyl. The invention also discloses a preparation method for the compound and application thereof in preparing bactericide.