The present invention relates to a method for treating waste organic solvents which are generated in the process of manufacturing a display device. The method for treating waste organic solvents according to the present invention minimizes process trouble caused by the formation of a crosslinked structure by heat in the purification process of waste organic solvents, lowers the operation costs of equipment, and improves the recovery rate of organic solvents by suppressing the cross-linking polymerization of a negative photoresist component.
