A conductive polymer composite includes: a π-conjugated polymer, and a dopant polymer which contains a repeating unit of general formula (1) and having a weight-average molecular weight of 1,000-500,000. The conductive polymer composite which has excellent filterability and film-formability by spin coating, and can form a conductive film having high transparency and excellent flatness. R1 represents a hydrogen atom or methyl group; R2 represents any of a single bond, ester group, and linear, branched, or cyclic hydrocarbon group having 1 to 12 carbon atoms, the hydrocarbon group optionally containing any one or more of an ether group, ester group, and amide group; “Z” represents any of a single bond, phenylene group, naphthylene group, ether group, and ester group; R3 represents a hydrogen atom or alkyl group having 1 to 4 carbon atoms, and may be bonded to R2 to form a ring; and “a” is a number satisfying 0