The object of the invention is to provide an antistatic agent exhibiting an excellent property of preventing film-thinning phenomenon and fogging in chemically amplified resists, an antistatic film using the antistatic agent and a product coated therewith. The antistatic agent comprising the water-soluble electroconductive polymer, the solvent and the water-soluble polymer. By using a water-soluble polymer, especially a water-soluble polymer compound having a polypeptide bond or a specific water-soluble polymer compound having a polyvinyl structure in combination with a water-soluble electroconductive polymer in an antistatic agent, influences on resist (such as fogging, film-thinning phenomenons and dissolution of resist after developing of resist) can be suppressed even when surfactant is added into the antistatic agent for the purpose of imparting coatability inexpensively and easily, while maintaining coatability of the agent. An antistatic agent having improved coatability by comprising surfactant may cause mixing, which leads to development defects and changes in the developing time, not only in chemically amplified resist but also in non-chemically amplified resist.