PROBLEM TO BE SOLVED: To provide a reaping working machine that can efficiently reap a reaping object while smoothly cutting the reaping object regardless of a level of a length and raking the object to the rearward, in the reaping working machine for reaping the reaping object such as grass by a pair of rotational reaping rotating bodies.SOLUTION: A reaping working machine includes: a machine body 3 made to travel and driven by a traveling part 2; right and left reaping rotating bodies 28 rotatably supported at the front side of the machine body 3; a conveying rotating body 29 rotatably supported directly above each reaping rotating body 28; and a drive unit for rotationally driving the right and left reaping rotating bodies 28 and the conveying rotating bodies 29 from a raking space S between the right and left conveying rotating bodies 29 to the raking side in the rearward. The reaping rotating body 28 has reaping blades 88 radially projected from a center of rotation Y, and the reaping blades 88 are plurally arranged in the rotation direction at intervals, and a right and left reaping ranges of the reaping blades 88 of the right and left reaping rotating bodies 28 are partially overlapped. The drive unit drives the speed of the reaping rotating bodies 28 and the conveying rotating bodies 29 higher than the traveling speed.