There is provided a method for producing a conductive polymer solution comprising: a freeze-drying step in which an aqueous conductive polymer solution containing a complex that includes a π-conjugated conductive polymer and a polyanion is freeze dried to thereby obtain a solid complex; and a dispersion step in which an organic solvent having a water content of 4% by mass or less and an amine compound are mixed to the solid complex, followed by a dispersion treatment.