PROBLEM TO BE SOLVED: To avoid reduction of reaping performance due to a second ground sensor positioned on a rear side with respect to a raising device in a combine on which a first ground sensor and the second ground sensor are attached while separated from each other in a machine body front/rear direction in a reaping pre-processing part.SOLUTION: The combine includes: a grass dividing tool group arranged on a front end of a grass dividing frame unit of a reaping pre-processing part 8 and diving planted grain culm; a raising device 26 arranged on a rear side of the grass dividing tool group and raising the planted grain culm; a reaping device 29 supported by the grass dividing frame unit on a rear side of the raising device 26 and reaping the planted grain culm; a first ground sensor 36 supported by the grass dividing frame unit on a front side of the raising device and detecting a reaping height of the reaping pre-processing part 8; and a second ground sensor 37 supported by the grass dividing frame unit
