Abstract: With a view to accelerating growth of lawn in the fairway of golf course, or other lawn-covered ground, there is provided a lawn cutting apparatus which forms incised grooves of a predetermined depth in the lawn-covered grown surface by rotating of the cutting blade. Using this cutting blade, contact-resistance between the cutting blade and the inner faces of the incised grooves can be made as low as possible at the time of forming the incised grooves, and the incised part of the lawn covered ground can be finished with good outer appearance.