Disclosed is a hydrazide compound represented by the formula (1) below, whichhas an excellent control activity against a harmful arthropod. (1) (In the formula, R, R, R and Rrepresent a hydrogen atom or the like； at least one of R and Rrepresents a C-C alkyl group substituted by a cyano group；R represents a halogen atom or the like； J represents 1-(3-chloro-2-pyridyl)-3-bromo-1H-pyrazol-5-ylgroup or the like； and M represents a hydrogen atom, a C-Calkyl group which may be substituted by a halogen atom, or the like.)
