NOVELTY - A fluorine-containing ion exchange resin dispersion composition contains a solvent, a fluorine-containing ion exchange resin having fluorine-containing repeating units (I or II) and water. The fluorine-containing ion exchange resin has equivalent mass of 400-1000 g/eq. The dispersion composition comprises resin having particle diameter of 10 mu m or more of 0.1-80 volume% with respect to fluorine-containing ion exchange resin.    USE - Fluorine-containing ion exchange resin dispersion composition is used for electrolytic membrane and gas diffusion electrode for polymer electrolyte fuel cell (all claimed).    ADVANTAGE - The fluorine-containing ion exchange resin dispersion composition has low viscosity, and high concentration of fluorine-containing ion exchange resin. The electrode formed using the fluorine-containing ion exchange resin dispersion composition has excellent dispersibility of catalyst particles and durability. The fuel cell formed using the fluorine-containing ion exchange resin dispersion composition has excellent power generation characteristics. The flooding of fuel cell running is suppressed.    DETAILED DESCRIPTION - A fluorine-containing ion exchange resin dispersion composition contains a solvent, a fluorine-containing ion exchange resin having fluorine-containing repeating units of formula: -(CFZCF2)- (I) or -(CF2C(-O-(CF2CF(CF3)O)n-(CF2)m-SO3H)F)- (II) and water. The fluorine-containing ion exchange resin has equivalent mass of 400-1000 g/eq. The dispersion composition comprises resin having particle diameter of 10 mu m or more of 0.1-80 volume% with respect to fluorine-containing ion exchange resin.    Z=H, Cl, F or 1-3C perfluoroalkyl;    m=0-12;and    n=0-2.    An INDEPENDENT CLAIM is included for manufacture of fluorine-containing ion exchange resin dispersion composition, which involves mixing fluorine-containing ion exchange resin (in mass%) (1-15) and mixed solvent of water (50.1-99.9) and alcohol (0.1-49.9), distributed-processing aqueous dispersion containing fluorine-containing ion exchange resin and concentrating aqueous dispersion such that the concentration of fluorine-containing ion exchange resin is 15-45 mass%.