To provide a method for industrially producing high-purity 1,4-cyclohexanedicarboxylic acid suitably utilizable as a raw material for a polyester having excellent weather resistance, transparency, electric characteristics and moldability, and usable for an optical material or an electronic material, and a medicine.

The method for producing the 1,4-cyclohexanedicarboxylic acid involves hydrolyzing a dialkyl 1,4-cyclohexanedicarboxylate in an aqueous solution in the presence of an acidic catalyst. The hydrolysis is carried out while continuously evaporating water and alcohol by-produced in the hydrolysis to the outside of the reaction system and continuously or intermittently adding water to the reaction system.