A multifunction windrower is characterized in that a rack is provided with a cutting table at the front end, an engine at the rear end and a gearbox in the middle; a power input shaft, a cutting table input shaft, an intermediate shaft and an output shaft are borne on the body of the gearbox by bearings; an input pinion is sleeved on the power input shaft; a shift gear is installed on the cuttingtable input shaft correspondingly; a first drive pinion on the cutting table input shaft is meshed with a drive gearwheel on the intermediate shaft; a second drive pinion on the intermediate shaft ismeshed with an output gear on the output shaft by an idle gear drive mechanism; and a traveling wheel is installed on the output shaft; an armrest support is fixed at the top of the body of the gearbox and the top of the armrest support is connected with left and right armrest frames. The invention can be used as the windrower or as a micro-tilling machine, solves the problem of reversing during field operation, is complete in functions, convenient to use, high in utilization ratio of equipment, labor-saving in operation and safe, and has the characteristics of small volume, light weight, simple structure, easy removal and installation, convenient maintenance, economy, applicability and the like.