The present invention provides a tiller that can suppress fluctuation in tilling depth of a tilling claw during tilling. There is provided a tiller (10) including a machine body (12) including a drive source (11), a power transmission member (13) extending forward and downward from the machine body (12) and provided substantially in the center of width of the machine body, and a tilling claw (15) that performs tilling with power transmitted from the drive source via the power transmission member (13). To a case (40) of the power transmission member (13), a tilling depth stabilizing member (30) linearly extending toward soil along the case is fixed. A distal end portion (32) of the tilling depth stabilizing member (30) comes into contact with the soil in a position same as or in front of a rotation center (18) of the tilling claw (15) with respect to an advancing direction of the tiller (10).