The invention provides a method for purifying ethyl acetate. The method comprises the following steps: dehydrating crude ethyl acetate to be treated through an acid-resistant permeable membrane, and removing other impurities through a rectification technique. Compared with a single rectification process, the method has the advantages that water in ethyl acetate is removed in advance through an acid-resistant permeable membrane dehydration technology, so that a ternary or higher azeotropic system formed by ethyl acetate, water, ethanol and the like is broken through, the efficiency of removingother impurities through the rectification technology is remarkably improved, and the yield of ethyl acetate is increased; besides, moisture in the crude ethyl acetate solvent can be effectively removed by the crude ethyl acetate through the acid-resistant permeable membrane, other substances do not need to be added, new pollution is not generated, subsequent additional treatment is not needed, the permeable membrane can be continuously operated, the dehydration efficiency is high, the energy consumption is low, the ethyl acetate purification energy consumption is greatly reduced, and the purification cost is reduced.