NOVELTY - Recovery of dimethyl sulfoxide from dimethyl sulfoxide aqueous solution comprises adding raw material from raw material tank (23) to first dehydrating tower (1), entering steam, condensing by first dehydrating tower condenser (8), entering dehydrating tower product into first-stage dehydrating tower reflux tank, cooling, entering into forced circulation evaporation system, entering to second dehydrating tower (2), heating, entering steam, condensing by second dehydrating tower condenser (12), entering into second-stage dehydrating tower reflux tank and processing with cooling water system.    USE - Method for recovering dimethyl sulfoxide from dimethyl sulfoxide aqueous solution (claimed).    ADVANTAGE - The method increases safety of device operation, fully uses low-grade heat, reduces production cost, and reaches economic and energy-saving target.    DETAILED DESCRIPTION - Recovery of dimethyl sulfoxide from dimethyl sulfoxide aqueous solution comprises adding raw material from raw material tank (23) to first dehydrating tower (1), entering steam, condensing by first dehydrating tower condenser (8), entering dehydrating tower product into first-stage dehydrating tower reflux tank, cooling, entering into forced circulation evaporation system, entering to second dehydrating tower (2), heating, entering steam, condensing by second dehydrating tower condenser (12), entering into second-stage dehydrating tower reflux tank, processing with cooling water discharging system, entering into third dehydrating tower, entering steam, condensing by third dehydrating tower condenser, entering into third-stage dehydrating tower reflux tank, cooling, collecting material, entering into evaporation system, evaporating, distilling, condensing and discharging.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of recovery of dimethyl sulfoxide from dimethyl sulfoxide aqueous solution.    First dehydrating tower (1)    Second dehydrating tower (2)    First dehydrating tower condenser (8)    Second dehydrating tower condenser (12)    Raw material tank (23)