NOVELTY - Functional perfluoro ion exchange resin with high exchange volume with sulfuryl fluoride and sulfonate lateral groups formed by carrying out multi-element copolymerization of tetrafluoroethylene, two sulfuryl fluoride lateral group vinyl ether monomers with different structures and two sulfonate lateral group vinyl ether monomers, where the amount of the various monomers in the polymer (in mole-%) are tetrafluoroethylene (50-90.9), sulfuryl fluoride lateral group vinyl ether monomers (8.8-49.99) and sulfonate lateral group vinyl ether monomers (0.01-0.3), is new.    USE - The functional ion exchange resin is useful for manufacturing ion exchange films with fuel cell or chloro-alkali electrolysis pool (claimed).    ADVANTAGE - The perfluoro ion exchange film has high ion exchange volume, conductivity, size stability; low film resistance; long service life and chemical resistant property.    DETAILED DESCRIPTION - Functional ion exchange resin with high exchange volume with sulfuryl fluoride and sulfonate lateral groups for the functional perfluoro resin formed by carrying out multi-element copolymerization of tetrafluoroethylene, two sulfuryl fluoride lateral group vinyl ether monomers with different structures and two sulfonate lateral group vinyl ether monomers, where the polymer formed has a structure of formula (-(CF2-CF2)a-((CF(O-(CF2)p-S-O3)-CF2)a1)M(1/n +)-(CF2-CF2)b-((CF(O-(CF2)q-S-O3)-CF2)b1)M1(1/m+))y-((CF2-CF2)c-(CF-(O-(CF2)p-SO2F)-CF2)c1)-(CF2-CF2)d-(CF-(O-(CF2)q-SO2F)-CF2)d1))x, is new. The amount of the various monomers in the polymer (in mol%) are tetrafluoroethylene (50-90.9), the sulfuryl fluoride lateral group vinyl ether monomers (8.8-49.99) and the sulfonate lateral group vinyl ether monomers (0.01-0.3).    p, q = 2-4;    a, b, c, d = 1-10;    a1, b1, c1, d1 = 1; either    y/(x+y) = 0.01-0.3%; of    x/(x+y)=99.7-99.99%;    n, m = valence states of ions of the metals M and M1; and    M, M1 = Ce, Mn, La, Zn, W, Ti, V, Cr, Fe, Co, Ni, Cu, Zr, Nb, Mo, Ru, Rh, Pd, Ta, Re, Ir, Pt, H, Na or K.    Provided that p is not equal to q. An INDEPENDENT CLAIM is also included for preparing the functional perfluoro resin.