NOVELTY - The conductive polymer film prepared from a polymerization liquid, is claimed. The polymerization liquid comprises monomers of a conductive polymer, an oxidizer such as a transition metal compound or a transition metal salt, an alcoholic solvent, an aromatic solvent in a proportion of 1-50% by mass of a total solvent for polymerization, a pi -conjugated conductive polymer, and a dopant as an additive. The aromatic solvent comprises an aromatic ring with a constituent consisting of an alkyl group with 1-4C and/or an alkoxy group with 1-4C.    USE - The conductive polymer film is useful in an electronic device including a solid electrolytic capacitor, an organic solar cell, a transparent electrode, a touch screen (all claimed), organic electroluminescent devices, actuators, transistors, dye-sensitized solar cells, capacitors, batteries, sensors, LCDs and electronic papers.    ADVANTAGE - The conductive polymer film exhibits excellent conductivity, increased flexibility and high resistance to heat, improved durability and desired light transmittance thus enhancing performance of the electronic devices.    DETAILED DESCRIPTION - The conductive polymer film prepared from a polymerization liquid, is claimed. The polymerization liquid comprises monomers of a conductive polymer, an oxidizer such as a transition metal compound or a transition metal salt, an alcoholic solvent, an aromatic solvent in a proportion of 1-50% by mass of a total solvent for polymerization and a pi conjugated conductive polymer, and contains a dopant as an additive. The aromatic solvent comprises an aromatic ring with a constituent consisting of an alkyl group with 1-4C and/or an alkoxy group with 1-4C. A number of constituent groups of the aromatic ring is 1 or 2. The alkyl group is bonded at two positions of the aromatic ring to form a ring structure. The alcoholic solvent has a mass ratio of 1:1:1-1:32:96 (monomer:oxidizer:solvent). The pi conjugated conductive polymer has a repeating unit of the monomer of the conductive polymer. An INDEPENDENT CLAIM is included for a method of forming a conductive polymer film.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a solid electrolytic capacitor.    Anode (1)    Dielectric layer (2)    Conductive polymer layer (3)    Carbon layer (4)    Silver paste layer. (5)