Provided is a skid apparatus for a rotary tiller capable of removing straw or grass from the surface of a field. The rotary tiller is provided with: a rotating shaft that rotates about an axis a plurality of tiller blades attached to the rotating shaft a rotary machine frame that supports the rotating shaft at one end and the other end, in the axial direction a skid provided on the lower part of the left-side part and/or the right-side part of the rotary machine frame and a guide tool provided on the front part of the skid. The skid has a main body part, and a front skid part having an inclined shape that inclines upward towards the front from the front end of the body part. The guide tool is formed in the shape of a mountain that becomes thinner toward the front, is affixed to the front surface of the skid front part so that the ridge line is vertical, and forms, on the tiller blade-side surface of the guide tool, a guide surface that guides straw to the tiller blade-side.
