Cutting mechanism and mower

The utility model is suitable for the field of mowing equipment, and discloses a cutting mechanism and a mower. The cutting mechanism comprises a cutter head, a shade, a power part, a cutting knife and fan blades; the shade is detachably connected to the cutterhead, the shade and the cutterhead define an inner cavity, and at least one of the cutterhead and the shade forms an air suction opening communicated with the inner cavity; the power part is mounted on the cutter head, and is provided with an output shaft which is arranged in the inner cavity in a penetrating manner; the cutting knife is contained in the inner cavity and connected with the output shaft so as to be driven by the output shaft to rotate. The fan blades are contained in the inner cavity and detachably connected with the cutting knife or the output shaft, and the fan blades are used for rotating under driving of the output shaft so as to form driving wind power from the air suction opening to the inner cavity. The cutting mechanism and the m