Abstract: An integrated method for preparing a fuel cell membrane-catalyst coated membrane electrode, comprising preparation a proto exchange membrane and preparing catalyst coated membrane electrode, characterized in that: the proton exchange membrane is prepared by casting, dipping or spraying proton exchange resin solution (401) to obtain a precursor without post-treatment; the catalyst coated membrane electrode (CCM), is produced by directly coating electrode slurry on both sides of precursor of proton exchange membrane using a method chosen from screen-printing, spraying or brushing, and drying to obtain a CCM precursor with stable morphology; and treating the CCM precursor with ion transformation, heat and activation.