The utility model relates to a molded line drawing type expanded diameter conductor in the field of overhead transmission line, the conductor can fit for such severe application environments as high voltage, high elevation and high wind, and the like, and the conductor has such properties as stable structure, saving materials, reducing corona, reducing energy consumption, damping and prolonging service life, etc. The molded line drawing type expanded diameter conductor comprises a central reinforced steel strand, a molded line drawing type aluminum twisted wire layer and an aluminum twisted wire layer on the outermost layer, wherein the central reinforced steel strand serves as a core wire and is located in the molded line drawing type aluminum twisted wire layer and the aluminum twisted wire layer on the outermost layer, and the molded line drawing type aluminum twisted wire layer is located between the aluminum twisted wire layer on the outermost layer and the central reinforced steel strand. The molded line drawing type aluminum twisted wire layer is composed of at least two aluminum twisted wire layers to form a molded line drawing type structure. The aluminum twisted wires of the molded line drawing type aluminum twisted wire layer are of deformed wire structures. The aluminum twisted wires of the molded line drawing type aluminum twisted wire layer are T-shaped wires, Z-shaped wires or S-shaped wires. The twisting direction of the aluminum twisted wire layer on the outermost layer is rightward.