The utility model relates to the technical field of agricultural m achinery, small -size machine of ploughing a little suitable for mountain region especially. This kind of small -size machine of ploughing a little suitable for mountain region, including frame, power assembly, handrail and running gear, drive mechanism, tensioning that running gear installed action wheel and leading wheel, connection action wheel and leading wheel on initiative wheel support and direction wheel support including the initiative wheel support direction wheel support that is fixed in support below, the respectively track on action wheel and leading wheel, the diameter of action wheel is greater than the diameter of leading wheel, and leading wheel support motion relatively, the action wheel is connected in order to drive the track removal with the power assembly transmission. Above -mentioned small -size machine of ploughing a little suitable for mountain region, when the soil of meeting the mountain region unevenness, the leading wheel removes for the frame and makes the track deform everywhere to move, play the effect of buffering and adaptation bottom surface, and its moving stability is good, the operation is dexterous, especially is fit for the big arable land use with the small size of topography change.