The invention relates to a profiled bar fine wire drawing technology. The profiled bar fine wire drawing technology comprises the following steps that firstly, annealing is conducted, wherein materials are put into a bell jar furnace, the temperature is raised to 700 DEG C in the nitrogen protection environment and preserved fro 1-1.5 h, the materials are discharged out of the furnace when cooling to the temperature lower than 400 DEG C along with the furnace, and the materials are cooled through air to the room temperature; secondly, acid pickling is conducted, wherein the materials are steeped in a sulfuric acid solution at the temperature of 65 DEG C for 15 minutes; thirdly, first drawing is conducted, wherein the materials are coarsely drawn into a round wire; fourthly, secondary annealing is conducted; fifthly, aging treatment is conducted, wherein the materials are stored for several days at a ventilated and dry place; sixthly, coarse drawing is conducted, wherein the materials are coarsely drawn into the shape identical with that of a finished product; seventhly, annealing is conducted for the third time; eighthly, secondary aging treatment is conducted; ninthly, secondary acid prickling is conduced; tenthly, sizing is conducted, wherein the materials are steeped into sizing liquid boiled through steam, the sizing liquid is stirred until the sizing liquid is evenly bonded to the surfaces of the materials, and then the materials are taken out and aired; eleventhly, fine drawing is conduced, wherein the materials are subjected to fine drawing to the regulated shape and cross section size. By means of the profiled bar fine wire drawing technology, the wire drawn finished product has the advantages of being high in section size precision, smooth and flat in surface and the like, and the profiled bar fine wire drawing technology is beneficial to reducing cost under the mass production condition.