PROBLEM TO BE SOLVED: To provide a rotary tiller in which different types of tilling claws can selectively be mounted.SOLUTION: Two or more claw mounting flanges are provided in the claw shaft axial direction in an outer circumference of a claw shaft capable of being rotationally driven around a shaft center. Two or more first claw mounting parts for mounting first tilling claws are provided in the circumferential direction of the claw mounting flanges in respective claw mounting flanges. Also, in the inner circumferential sides of the claw mounting flanges of the first claw mounting parts, two or more second claw mounting parts for mounting second tilling claws with types different from the first tilling claws are provided in the circumferential direction of the claw mounting flanges.
