To provide a method for safely and practically advantageously producing a benzazole group-containing triazine compound useful as a material for organic electroluminescent elements.

This method for producing the benzazole group-containing triazine compound is characterized by trimerizing a compound represented by general formula (I) (wherein, X denotes oxygen atom, sulfur atom or an N-R group; R denotes an alkyl group or an aryl group; and the aromatic ring A may have an optional substituent group) in the presence of a strong acid and producing the triazine compound represented by general formula (II).