TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Monomer: The monomer(s) which contains anion exchange group is vinylbenzyl trimethyl ammmonium salt, quaternary salt of 4-vinylpyridine, quaternary salt of 2-vinylpyridine or quaternary salt of N-vinyl imidazole.    TECHNOLOGY FOCUS - POLYMERS - Preferred Monomer: The monomer which contain the group which introduces the anion exchange group is p-chloromethyl styrene, m-chloromethyl styrene, 4-vinylpyridine, 2-vinylpyridine or N-vinyl imidazole. Preferred Anion Exchange Film: The ion exchange capacity of the anion exchange film is 1.2-5.0 milliequivalent/gram of drying resin. Radiation graft polymerization of monomer which contains the group which introduces anion exchange group into the base material, is carried out. Preferred Base Material: The base material(s) is polytetrafluoroethylene, tetrafluoroethylene/ethylene copolymer, tetrafluoroethylene/perfluoro (alkyl vinyl ether) copolymer, tetrafluoroethylene/hexafluoropropylene copolymer, or polyvinylidine fluoride. EXAMPLE - gamma-radiation was irradiated on ethylene-tetrafluoro ethylene copolymer (ETFE) film. The film was immersed in p-chloromethyl styrene and m-chloromethyl styrene, graft polymerized, washed and dried. Anion exchange group was introduced into polymerization unit based on p-chloromethyl styrene by which graft polymerization was carried out, and polymerization unit based on m-chloromethyl styrene. The film was washed, immersed in sodium hydroxide, again washed and dried. Anion exchange film having ion exchange capacity of 1.9 milliequivalent/g of drying resin was obtained. On the other hand, TFE was copolymerized using an initiator. Copolymer having ion exchange capacity of 1.6 meq/g of drying resin was obtained. Resin was hydrolyzed, washed and dried. Obtained copolymer was immersed in tetrahydrofuran and washed with methanol. Terminal acid groups were converted into anion exchange groups. Copolymer was immersed in NaOH aqueous solution, washed and dried, and dissolved in hexafluoro isopropanol to form anion exchange polymer solution. The solution was coated on gas diffusion electrode, and electrode was mounted on anion exchange film, dried. A membrane electrode piece was obtained. A fuel cell was obtained using the electrode piece. The fuel cell had terminal voltage of 0.82 V with open circuit voltage of 0.97 V and current density of 0.1 A/cm2.