The purpose of the present invention is to provide a novel 1- phenylpiperidine derivative and an agricultural/horticultural drug agent including the compound as an effective component, in particular a novel 1-phenylpiperidine derivative useful for an agricultural/horticultural pest control agent, tick/mite control agent, nematode control agent and the like, and a production method and method of use thereof. Provided are a 1-phenylpiperidine derivative represented by a formula, N-oxide thereof, or a salt thereof. [In the formula: R is, for example, a C1 -6 alkyl group or a C1 -6 haloalkyl group； X is, for example, a C1 -6 alkyl group, a C1 -6 haloalkyl group, a halogen atom, or a cyano group； Y is, for example, a halogen atom； Z is, for example, a C1 -6 haloalkyl group； n is an integer of 0, 1, or 2； and m is an integer of 1 to 3.].本發明提供一種新穎1-苯基哌啶衍生物及以該化合物為有效成份之農園藝用藥劑、尤其是對農園藝用害蟲防治劑、或蜱蟎防治劑、線蟲防治劑等有用之新穎1-苯基哌啶衍生物、以及其製造及使用方法。 本發明提供一種以下之式所表示之1-苯基哌啶衍生物、其N-氧化物或其鹽。 [式中，R例如為C1-6烷基、C1-6鹵烷基等，X例如為C1-6烷基、C1-6鹵烷基、鹵素原子、氰基等，Y例如為鹵素原子等，Z例如為C1-6鹵烷基，n表示0、1或2之整數，m表示1～3之整數]
