Lawn trimming device

The utility model provides a lawn trimming device. The lawn trimming device comprises a main support, a walking mechanism, a grass mowing mechanism and a grass scrap cleaning mechanism. The walking mechanism, the grass mowing mechanism and the grass scrap cleaning mechanism are connected with the main support. The grass scrap cleaning mechanism comprises a dust collection motor, a garbage conveying pipe, and a dust collection air inlet and a grass scrap collection device which are respectively communicated with two ends of the garbage conveying pipe; the dust collection air inlet is positionedat the grass mowing mechanism; when the dust collection motor works, grass clippings are sucked in from the dust collection air inlet, pass through the garbage conveying pipe and are finally loaded into the grass clippings collection device. The lawn trimming device comprises the grass trimming mechanism and the grass scrap cleaning mechanism, grass scraps are cleaned while grass trimming is conducted, secondary cleaning