PROBLEM TO BE SOLVED: To provide a combine harvester for eliminating influence of disturbance from output of an amount-of-grain detection sensor.SOLUTION: A detection result of a charging port sensor 23a is corrected based on a rotational speed of a first screw conveyor 23, thus suppressing an influence of disturbance from the detection result of the charging port sensor 23a and precisely detecting the amount of grain stored in a grain tank 4. When the charging port sensor 23a is a pressure sensor, pressure from grain operating on the pressure sensor differs depending on the rotational speed of the first screw conveyor 23 even if the amount of grain is the same. However, by correcting the difference, detection precision of the charging port sensor 23a is increased.
