PROBLEM TO BE SOLVED: To provide a combine capable of preventing temperature rise of an inner quality measurement device effectively while installing the inner quality measurement device in a front part of a grain tank.SOLUTION: A combine comprises a cooling fan supplying engine cooling air in a lateral inward direction of a travel machine body and a grain tank 10 installed in a rear part of an engine. A measurement chamber 70 in a state opened in a frontward direction of the travel machine body is provided in a front part of the grain tank 10 and an inner quality measurement device 40 measuring an inner quality of grain is provided in the measurement chamber 70. The inner quality measurement device 40 includes a housing 74 accommodating a detection part and a measurement control part. The housing 74 includes a suction port 76 capable of introducing control part cooling air cooling the measurement control part and a discharge port 77 capable of discharging the control part cooling air. The suction port 76 is disposed at a portion near a lateral outer side of the travel machine body of the housing 74.SELECTED DRAWING: Figure 3
