TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The microporous film can be inorganic microporous film.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The microporous film is organic microporous film. The solvent, used in molding, spin coating, casting, screen painting, spraying or dipping, is dimethylformamide, dimethylacetamide, methylformamide, dimethyl sulfoxide, N-methyl pyrrolidine, hexamethyl , acetone, water, ethanol, methanol, isopropanol, glycol and/or propanetriol.    TECHNOLOGY FOCUS - POLYMERS - Preferred Method: The fluorine-containing ion exchange resin is formed by copolymerization of fluoroalkene, fluoroalkene monomer(s) containing functional group, and/or fluoroalkene monomer(s) containing crosslinking site. It is crosslinked on surface of the microporous film, or in the clearance of microporous film. The film forming is heat treated for 10-100 minutes at 30-300 degrees C when using molding, spin coating, casting, screen painting, spraying or dipping. The crosslinker and/or initiator are added, or dispersed into the solvent to enter the membrane through the manner that the membrane is swelled in the solvent. Preferred Material: The fluoroalkene is trifluoroethene, hexafluoropropylene, vinylidene fluoride, or preferably tetrafluoroethylene or chlorotrifluoroethylene. The fluoroalkene monomer containing functional group is structure of Y1(CF2)a(CFRf1)b(CFRf2)cO(C(CF2X)FCF2O)n-CF=CF2, Rf3CF=CF(CF2)dY2, and/or F2C=CFOCF2C(CF2OCF3)FOCF2CF2Y3. The fluoroalkene monomer containing crosslinking site is structure F2C=CFRf4Y4 and/or Y5(CF2)a'(CFRf5)b'O(CFRf6)c'O(C(CF2X1)FCF2O)n'-CF=CF2. The organic microporous film is polymer microporous film, e.g. fluorocarbon polymer membrane.a-c=0-5;d=0-5;n=0 or 1;Rf1-Rf3=perfluoroalkyl, chlorofluoroalkyl, or preferably 1-10C perfluoroalkyl or chlorofluoroalkyl;X=F, Cl, Br or I;Y1-Y3=SO2M, COOR3, or PO(OR4)(OR5);M=Br, F, Cl, OR, or NR1R2;R=methyl, ethyl or propyl, H, Na, Li, K or ammonium;R1, R2=H, methyl, ethyl or propyl;R3-R5=R;Y4, Y5=Cl, Br, I or CN;a'-c'=0 or 1;X1=F, Cl, Br or I;n'=0 or 1;andRf4-Rf6=perfluoroalkyl or chlorofluoroalkyl.Preferred Property: The microporous film has a pore diameter of 0.1-1 mu m, thickness of 5-100 mu m, and porosity of 30-99 (preferably 70-97)%. Preferred Composition: The solid content in the prepared resin solution is 1-80 wt.%.