To provide a new N-(2-hydroxyethyl)-2-arylsulfonylethylamine expressed by the general formula (2) [R1 and R2 may be the same to or different from each other, and are each H, a halogen, a lower alkyl, a lower alkoxyl, nitro, amino, a lower alkylamino or a di(lower alkyl)amino].

This method of producing the N-(2-hydroxyethyl)-2- arylsulfonylethylamine comprises reacting an aryl vinyl sulfone expressed by the general formula (1) with monoethanolamine.