Method for producing aqueous solution of glycolic acid

The invention relates to a method for producing an aqueous solution of glycolic acid, and mainly solves the problems of low yield and low product purity in the prior art. The method for producing the aqueous solution of glycolic acid is as below: conducting hydrolysis reaction on the raw materials of methyl glycolate and water in a fixed bed reactor under autocatalysis conditions without a catalyst at the reaction temperature of 60-80 DEG C, atmospheric pressure and liquid hourly space velocity of 0.4-3.0 / h; sending the fixed bed reactor outlet products into a reaction distillation column; and continuously extracting methanol and water condensate from the top of the reaction distillation column. The technical scheme of continuous extraction of aqueous solution of glycolic acid can solve the above problems, and can be applied to the production of aqueous solution of glycolic acid.