Objects of the present invention are to provide a compound which is highly active against pests, to provide a pest control agent comprising the compound, and to provide a method for controlling a pest by applying the compound. The present invention provides a 4-(arylethynyl)pyridine or a salt thereof, a pest control agent which comprises the 4-(arylethynyl)pyridine or salt thereof as an active ingredient, and a method for controlling a pest by applying the 4-(arylethynyl)pyridine or salt thereof in an effective amount.本發明之目的為提供一種對抗害蟲有高度活性的化合物、含此化合物之害蟲防治劑、藉由施用此化合物以防治害蟲的方法。本發明提供一種4-(芳基乙炔基)吡啶或其鹽、含此4-(芳基乙炔基)吡啶或其鹽作為有效成分之害蟲防治劑，及藉由以有效量施用此4-(芳基乙炔基)吡啶或其鹽以防治害蟲的方法。
