A novel method of producing an azole derivative represented by General Formula (I) includes: reacting an organometallic reagent formed from 1-bromo-2-chloro-4-(4-chlorophenoxy)benzene by transmetalation reaction with a bromopyruvic acid derivative to obtain a bromohydrin derivative; and reacting the bromohydrin derivative with imidazole, 1,2,4-triazole, or an alkali metal salt thereof to obtain the azole derivative.