The invention relates to a method for recovering mixed solvent in gel spinning, which comprises the following steps: steam distillation, condensation, oil and water separation and a plurality of times of circulation until the mixed solvent is fully separated. A device for recovering the mixed solvent in gel spinning comprises a steam tank, a distillation column, a mixed solvent tank, a condenser,an oil and water separator, an extraction solvent storage tank, a reflux pump, a heavy oil tank, an explosion-proof oil pump, a white oil storage tank, a reservoir and a cooling water tower. The invention has the advantages that: 1. a steam heating method is adopted to continuously produce so that the output is increased by 3 to 3.5 times in the same scale; and the recovery cost is low; and 2. after recycling twice in the steam heating method, the gasoline and white oil in the mixed solve can be recycled after being separated.