Cutter for processing sleeve in wall

The utility model belongs to the technical field of building construction, and particularly relates to a cutter for processing a sleeve in a wall. The cutter comprises a supporting base, the supporting base comprises a base body and a flange connected with one end of the base body, the base body is tubular, and a circle of limiting protrusion is formed on the inner wall face of the base body; thecutting rod comprises a rod body and a sharp edge arranged at the top end of the rod body, and the sharp edge surrounds the rod body by a circle in the circumferential direction of the rod body; and acircle of arc-shaped recess matched with the limiting bulge is formed in the rod body, so that the rod body can rotate in the supporting seat under the support of the limiting bulge. The cutter disclosed by the utility model can cut off the PVC sleeve of the bolt from the interior of the wall body, and a worker takes out the cut-off sleeve and then blocks the sleeve, so that the problem of waterseepage is solved, and the