Tractor driven combine harvester is also manufactured by the company which is used for wheat crops cutting and threshing by simple and easy adjustment. Tractor of 50 H + with double clutch is used to power the machine which is detachable so that it can be removed and used separately during 10 months period of non use of combine harvester machine to give maximum economic utilization of fund invested. Railing system is provided for un mounting of tractor from the combine harvester for other purpose after harvesting season. The facility of blower system is given for cleaning grains.