Centrifugal cutter and lawn mower

The present invention provides a centrifugal cutter, comprising a cutter body, a top surface of the cutter body having a plurality of blades around the center line of the cutter body as a divergent profile, and the cutter blade body an integral structure integrally formed; the same time provide a lawn mower. In the present invention, by integrating an upper cutter blade, while mowing, lawn mower can internal motor control circuit board and the air circulation so as to achieve the purpose of cooling, while the cutter frame is generated at a pressure differential is formed microcirculation, the grass, dust discharge, dustproof effect.