NOVELTY - A polyfluorinated aromatic hydrocarbon-heteroaromatic copolymer is synthesized by in presence of organic solvent and under temperature of 100-140 degrees C, using polyfluorinated aromatic hydrocarbon and derivative as raw material, palladium salt as the catalyst, silver salt and oxygen as oxidant and Bronsted acid as additive to react with heteroaromatic ring compound for 3-9 hours to obtain polyfluorinated aromatic hydrocarbon-heteroaromatic ring. Silver salt is silver fluoride, silver acetate, trifluoroacetic acid, silver carbonate, or silver trifluoromethanesulfonate.    USE - Method for synthesis of polyfluorinated aromatic hydrocarbon-heteroaromatic copolymer (claimed) used in photoelectric material and solar battery.    ADVANTAGE - The method uses simple aromatic hydrocarbon and derivative and heteroaromatic ring compound as raw material. It also uses few dosage of catalyst, has simple operation and high reaction efficiency.    DETAILED DESCRIPTION - Polyfluorinated aromatic hydrocarbon-heteroaromatic copolymer is synthesized by in presence of organic solvent and under temperature of 100-140 degrees C, using polyfluorinated aromatic hydrocarbon and derivative as raw material, palladium salt as the catalyst, silver salt and oxygen as oxidant and Bronsted acid as additive to react with heteroaromatic ring compound for 3-9 hours to obtain polyfluorinated aromatic hydrocarbon-heteroaromatic ring. Mole ratio of polyfluorinated aromatic hydrocarbon and derivatives, palladium salt, silver salt, heteroaromatic ring compound, Bronsted acid and oxygen is 1-3: 0.01-1:0.01-1:1-3.0:0-1:0.2-48. Palladium salt is of formula PdX2, Pd(PPh3)4 or Pd2(dba), where X is acetic acid or trifluoroacetic acid root, PPh3=triphenylphosphine, and dba is dibenzalacetone. Silver salt is silver fluoride, silver acetate, trifluoroacetic acid, silver carbonate, silver trifluoromethanesulfonate, silver nitrate or silver oxide. The polyfluorinated aromatic hydrocarbon and derivative has polyfluorinated pyridine substituted by polyfluorinated benzene substituted by R1-R3 of formula (I) or (II).    R1-R3=H, 1-4C perfluoroalkyl, 1-4C alkyl, halo, Ph, 1-4C alkoxy, or Ph (substituted by 1-4C alkoxy, COOC1-4H3-9, or C=COO(1-6)C(3-13)H);    R4, R5=halo, CN, C(O), C(O)C1-4H3-9, COOC1-4H3-9, Ph, 1-4C alkoxy, Ph (substituted by NO2, C=COOC1-6H3-13, CON(C1-4H3-9)), trimethyl silicon radical or thienyl; and    R6=1-4C alkyl or benzyl, where heteroaromatic ring compound has quinary heteroaromatic ring containing O, N or S substituted by R4 or R5 or quinary heteroaromatic ring containing O, N or S substituted by benzo radical.