A conductive polymer material includes a π-conjugated polymer, dopant polymer which contains a repeating unit having a sulfo group and has a weight-average molecular weight in the range of 1,000 to 500,000, and amphoteric ion compound represented by the following general formula (1), wherein RC1 and RC2 independently represent a linear, branched, or cyclic alkyl group having 1 to 10 carbon atoms, a linear, branched, or cyclic alkoxy group having 1 to 10 carbon atoms, an acyl group having 2 to 10 carbon atoms, an acyloxy group having 2 to 10 carbon atoms, an alkoxycarbonyl group having 2 to 10 carbon atoms, a hydroxyl group, a nitro group, a halogen atom; and “m” and “n” are each an integer of 0 to 4. A conductive polymer material with low acidity that suppresses the agglomeration of particles with overtime, with an excellent stability in a solution state can be provided.