PROBLEM TO BE SOLVED: To easily produce an organic solvent system conductive polymer dispersion by easily performing conversion from an aqueous dispersion to an organic solvent system dispersion of a conductive polymer. SOLUTION: The organic solvent system conductive polymer dispersion having ≤10 mass% water content is produced via a step (1) for synthesizing a conductive polymer by oxidatively polymerizing a thiophene or its derivative in water or aqueous liquid made of a mixture of water and a solvent which can be mixed with water in the presence of a polymer sulfonic acid to be a dopant to obtain an aqueous dispersion of the conductive polymer, a step (2) for supplying a non-aqueous amine to the aqueous dispersion of the conductive polymer to flocculate the conductive polymer, a step (3) for taking out flocculated product of the conductive polymer from water or the aqueous liquid and a step (4) for dispersing the flocculated product of the conductive polymer in an organic solvent. COPYRIGHT: (C)2011,JPO&INPIT