Abstract: In order to realize the numerical control polishing of narrow flow channel blisk, based on the use of complex generatrix super-hard abrasive flexible polishing wheel, the shape and size design of polishing wheel for blisk profile, flow channel and root is carried out. The design principle of barrel and ball-end polishing wheel for high efficiency polishing is determined, and the optimization of large-scale barrel radius is realized. Then, according to the polishing requirements of different areas, the determined-path polishing is carried out on a certain type of blisk was polished with the selected tool, by polishing the surface roughness Ra≤0.4 μm, and the fine milling cutter marks are completely removed, which meets the requirements of replacing manual polishing.