Method for preparing o-xylene-alpha, alpha'-diol

The invention discloses a method for preparing o-xylene-alpha, alpha'-diol. The main process of the method comprises the following steps of carrying out hydrolysis reaction of alpha, alpha-di[chloro-o-xylene] in the presence of alkali, removing impurities through organic solvent back-extraction, adjusting the pH value of a mother liquor to 7-7.5 with hydrochloric acid, obtaining crudes after concentrating, separating salt and cooling, recrystallizing with water to obtain finished products after drying. The operation course of the process provided by the invention is simple, convenient and safe, which is suitable for industrial production.