Lawn mower

The utility model discloses a grass mower which comprises a machine frame, walking wheels are arranged on the machine frame, a cutting device is arranged at the front end of the machine frame, the cutting device comprises a fixed cutter fixed to the machine frame, a movable cutter circularly swinging in the length direction of the fixed cutter is arranged above the fixed cutter, and the movable cutter is arranged above the fixed cutter. A rocker used for driving the movable cutter to swing is arranged in the middle of the movable cutter, a power device is connected to the end, away from the movable cutter, of the rocker, and the end, close to the output disc, of the rocker is divided into two sections, so that pulling of the rocker is reduced when the output disc rotates, a left-right swing space is provided, the swing efficiency of the movable cutter is improved, and the grass mowing effect is improved. And the motor is used for driving, noise is greatly reduced, and the device can also be used in some crowd