The invention discloses a reaming honing cutter brazed with cubic boron nitride superhard abrasives for processing holes in materials difficult to process. The reaming honing cutter comprises a cutter bar and a cutter base body, wherein a processing part and a guide part are arranged on the cutter base body; and the processing part consists of a cutting part, a finishing part and a retracting part. Cubic boron nitride superhard abrasive series are arranged on the cutter base body in the form of cutting edges and are brazed on the cutter base body, so that the holding strength of an adhesive to abrasives is improved, the too-early fall of abrasives is prevented, the service life of the cutter is prolonged, and at the same time, the designability of the cutting-edge-shaped structure of the cutter is also improved. By adopting upper and lower linear cutting edges and a chip discharging groove spirally arranged, cooling, lubrication and chip discharging are enhanced, grinding force and temperature can be effectively reduced, surface defects are inhibited from occurring, tool surface blockage is prevented, and the service life of the cutter is further prolonged.