Conducting microfibers of poly(3,4-ethylenedioxythiophene) doped with poly(4-styrene sulfonate), having a diameter ranging between 4.6 and 16 mum, were fabricated by a wet-spinning technique. The as-spun microfiber had no notable orientation of polymer chains with poor crystallinity, and electrical conductivity was in the order of 10(-1).cm(-1) regardless of the diameter. Young's modulus, tensile strength, and elongation at break for the resulting microfiber were 1.1 +/- 0.3 GPa, 17.2 +/- 5./1 MPa, and 4.3 +/- 2.3%, respectively.