The invention discloses a hydrophilic modification method for polyester fibers with bromoethane and PVA and belongs to the technical field of macromolecules. According to the method, a sodium hydroxide solution is added to the polyester fibers, the mixture is stirred, heated and preprocessed, the surfaces of the polyester fibers are damaged, and subsequent modification processing is facilitated; a bromoethane solution is added to the polyester fibers, the mixture is stirred and heated and subjected to modification treatment, then a PVA solution with the mass ratio being 4-5.5% is added to the polyester fibers, the mixture is stirred and heated, and the polyester fibers obtained after hydrophilic modification is obtained. According to the method, after the sodium hydroxide solution is added for preprocessing the polyester fibers, the bromoethane solution and the PVA are utilized to conduct modification processing on the polyester fibers, and the polyester fibers good in hydrophilia and antistatic performance are obtained. The method is easy and convenient to operate, the reaction speed and the reaction temperature are easy to control, the amount of organic solvent added in the reaction process is small, low toxin, low pollution and low emission are achieved, subsequent operation is easy and convenient to conduct, industrialized popularization are facilitated, and high economic benefits are achieved.