The invention relates to a method for preparing aqueous solutions of N, N-dimethylglucamine, characterized by first preparing an adduct of N-methylglucamine and formaldehyde in water at temperatures of between 15?C. and 40?C., and subsequently reacting said adduct to N, N-dimethylglucamine in the presence of a metal catalyst under hydrogen pressure at 20-68?C., followed by secondary hydrogenation at 70-120 bar and 70-110?C. once hydrogen absorption at 20-68?C. is completed.