NOVELTY - A molding process for fuel cell compound proton exchange membrane comprises adhering perfluorinated acid resin to the varicosity PTFE Millipore basement membrane comprising three parts immersing PTFE Millipore basement membrane into perfluorinated sulfonic acid dilute solution, spraying perfluorinated sulfonic acid resin solution onto two sides of the basement membrane and heat setting the compound membrane.    USE - Molding process for fuel cell compound proton exchange membrane (claimed).    ADVANTAGE - The process solves the problem of difficulty for controlling the deformation of PTFE membrane, low thickness precise of the membrane and low production efficient in the same type of compound membrane preparing process so that the compound membrane does not have the phenomenon of the deformation of the PTFE Millipore membrane in the spraying process and has merits of easiness for enlarging the production, low demand of the spraying technology for the device precise and the high thickness leveling of the compound membrane that is molded by spraying.    DETAILED DESCRIPTION - A molding process for fuel cell compound proton exchange membrane comprises adhering perfluorinated acid resin to the varicosity PTFE Millipore basement membrane, comprising three parts immersing the polyfluortetraethylene Millipore basement membrane into the perfluorinated sulfonic acid dilute solution, spraying the perfluorinated sulfonic acid resin solution onto two sides of the basement membrane and heat setting the compound membrane. Immersing PTFE Millipore basement membrane into the dilute solution of perfluorinated sulfonic acid comprises (a) preparing the dilute solution of the perfluorinated sulfonic acid resin; the perfluorinated sulfonic acid resin is dissolved into the organic alcohol solvent to prepare 0.1-5 wt.% dilute solution and then the organic solvent with high boiling point is added in; mass ratio of the organic solvent with high boiling point and perfluorinated sulfonic acid resin is 1:1-8:1; (b) fixing the varicosity polyfluortetraethylene Millipore basement membrane onto the steel bracket and then immersing it into the solution prepared in (a) for 10-60 minutes and then removing; (c) drying the solution on the surface of the polyfluortetraethylene Millipore basement membrane fixed on the steel bracket and drying it at 60-130 degrees C for 2-60 minutes. Spraying perfluorinated sulfonic acid resin solution onto two sides of the basement membrane comprises (d) preparing perfluorinated sulfonic acid resin spraying solution; the perfluorinated sulfonic acid resin is dissolved into the organic alcohol solvent to prepare 1.0-10.0 wt.% solution and then the organic solvent with high boiling point is added in; mass ratio of the organic solvent with high boiling point is 1:1-8:1; (e) the solution prepared in (d) is put into the spraying device and the basement membrane prepared in (c) is put on the heating stage; two sides of the base membrane are covered and sprayed by the spraying device; (f) repeating (e) until the thickness of the compound proton exchanging membrane reaches the expected value; (g) the compound membrane prepared in (f) is put into the oven to be dried and molded at 120-200 degrees C for 1-6 hours.