The invention discloses a high-conductivity fluorine-contained polyion liquid diaphragm material and a preparation method thereof. The high-conductivity fluorine-contained polyion liquid diaphragm material comprises a cation and a fluorine-contained anion, wherein the cation is hydrogen ion or at least one of metal ions and a compound cation formed by combining organic molecules, and the fluorine-contained anion is poly fluorine-contained anion connected by a macromolecule main chain. Compared with the prior art, the high-conductivity fluorine-contained polyion liquid diaphragm material of the invention has the advantages of small possibility of ionic liquid draining, independence from water for electrical conductivity, prevention from being penetrated by OH<-> anion, carbinol or vanadium ion and the like. In addition, the high-conductivity fluorine-contained polyion liquid diaphragm material can form a stable lamellar or tubular ion path which has strong ion activity, high chemical stability and low ion activation energy and is easy to adsorb organic polar solvent. The material is an ideal diaphragm material capable of being applied in lithium ion batteries, secondary lithium ion batteries, methanol fuel batteries, liquid flow batteries, electrodialysis water treatment, nuclear industry and analysis, catalyst synthesis, chlorine industry and the like.