In order to prepare high-stability PEDOT/PSS aqueous dispersion coating liquid，the aqueous dispersion and film were characterized by laser particle size scanner， atomic force microscope and four-probe tester. The effects of different active silane couplingagents，pH regulators，and organic solvents on the stability of PEDOT/PSS aqueous dispersions and the properties of paint films were studied. The results showed that different silane couplingagents，organic amine or inorganic ammonia pH regulators，and monohydric or diol solventsindicated an important impact on the stability of the obtained aqueous dispersions，the stabilityof the distribution of membrane microstructure，and the conductivity of the film. Theconductivity of the coating solution after the addition of silane coupling agent VTMS andalcohol solvent IPA increased by an equal order of magnitude. The conductivity of the aqueousdispersion containing 5 mol/L inorganic ammonia water remained above 200 S/cm after beingstored in a 50 ℃ drying oven for one week. Inorganic alkali ammonia water played a crucialrole in improving the stability of the aqueous anti-static dispersion.