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.]
