To provide a small-sized tending machine which can be readily operated and is inexpensive and which an operator drive without requiring a walk in a field.

Crawler traveling apparatuses K are arranged at both sides of a main frame F. The crawler traveling apparatuses K are each equipped with driven wheels 31 and 32 in front and in rear and driving sprockets 30 are installed above their centers to constitute approximately triangular forms on the side view. A rotary tiller C is liftably arranged at the rear of the main frame F and the front end part of a hydraulic cylinder is pivoted on a bracket 22 projecting downward from the main frame F. The rear end part of the hydraulic cylinder 21 is rotatably pivoted on a rotary case 14 for transmitting power of an engine E to the rotary tiller C installed at the rear part of the main frame F and the rotary tiller C can be lifted and lowered by lengthening and shortening the hydraulic cylinder 21.