Abstract: The present invention is disclosed a manufacturing process and a structure of MEA layer for fuel cell. In the present invention, it forms a rigid support to proton exchange membrane with racks that are separately pasted on the upper an lower surface of it, and the area outside where the racks are pasted is defined as the second areas. Catalyst and diffusion layers are formed on the second areas of the upper and lower surface of the proton exchange membrane by means of Nafion solution manufacturing process, which finally forms the MEA layer for electrochemical reaction of the fuel cell on the second area of the proton exchange membrane.