Abstract: An edge-breaking can opener includes a first clamping handle and a second clamping handle. The first clamping handle and the second clamping handle are rotatably connected by using a rivet. A round angle is set between a tray gear and a helical gear, which reduces a cutting height. A protrusion portion on an original cutter wheel is creatively changed to an elastically adjustable support wheel that acts on a can with different edge heights. It is convenient to perform occlusion during cutting, and a cut can cover can be directly and safely taken out, thereby preventing a hand from coming into contact with the can cover. The cutter wheel can easily perform cutting by using acting force of spring plate, which is suitable for cans with a certain material thickness.