The present disclosure provides a method for improving the compatibility of the polymer materials. The method includes following step: performing a mixing step, providing a surfactant and performing an adding step. The mixing step is for mixing at least two polymer materials to form a polymer mixture solution, and the types of the at least two polymer materials are different. The surfactant is a copolymer of vinyl acetate and styrene. The adding step is for adding the surfactant to the polymer mixture solution and stirring uniformly to improve the compatibility between the at least two polymer materials. Accordingly, the method of the present disclosure can improve the problem of delamination and incompatibility between the polymer materials. |