An axle attachment structure for tilling rotors of a tending machine is provided. The tilling rotors are mounted on an axle protruding from both sides of a mission case of the tending machine in a width direction. The tilling rotors are rotated with rotation of the axle to perform tilling work. The axle attachment structure for tilling rotors includes: each of the tilling rotors including: a rotor body connected to the axle a tilling claw attached to an outer periphery of the rotor body and a coupling protrusion protruding from an end surface of the rotor body on the mission case side toward the mission case. An axle cover is provided between the mission case and the rotor body while the axle is connected to the rotor body. The axle cover circumferentially surrounds outer peripheries of the axle and the coupling protrusion.
