The invention discloses a milling cutter with a chamfer. The milling cutter comprises a top plate and a convex block, the lower surface of the top plate is provided with the convex block, an insertionhole is internally provided with an insertion rod, the right side of an insertion slot is provided with a cavity, the cavity is internally provided with a second pad block, the left side surface of the second pad block is provided with a second spring, the right end of the insertion rod is connected with the second pad block, the right side of the cavity is provided with a bolt buckle, the bolt buckle is internally provided with a first bolt, and the lower end of a cutter handle is provided with a cutter head. According to the milling cutter with the chamfer, the milling cutter is fixed by means of the manner of the insertion rod being inserted into the insertion hole, an old milling cutter can be pushed out of the inner portion of the insertion slot by means of the manner that a first pad block is pushed by a first spring to move downwards, thus users can insert a new milling cutter into the inner portion of the insertion slot and fix the new milling cutter by rotating the first bolt, and maintenance and replacement of the milling cutter for users are facilitated.