The invention discloses a tobacco harvesting machine comprising a framework. A front traveling wheel is mounted at the bottom of the framework, travel driving units for driving the front traveling wheel to move are mounted on the framework, and a steering driving unit is mounted between the front traveling wheel and the framework; a tobacco storage trunk is connected with the rear end of the framework, a back traveling wheel is mounted at the bottom of the tobacco storage trunk, at least one tobacco harvesting station is arranged below the front end of the tobacco storage trunk, and one tobacco harvesting and lifting device is arranged between each tobacco harvesting station and the tobacco storage trunk; the travel driving units drive the tobacco harvesting machine to move in the field. When tobacco harvested by workers in the tobacco harvesting stations reaches a certain amount, the tobacco is conveyed to the tobacco storage trunk by the aid of the tobacco harvesting and lifting device; after harvesting, the workers do not need to move the tobacco in the field, the tobacco can be conveyed to a tobacco drying room, so that labor force and labor time are saved, and work efficiency is provided.