PROBLEM TO BE SOLVED: To provide a harvester which can measure weight of a stored harvest without a degree of freedom of oscillation of a harvest tank and in which a calibration and a maintenance inspection are easy.SOLUTION: A harvester includes a harvest tank 9 for storing temporarily a harvest harvested while traveling. The harvester includes a deformation measurement apparatus 2 for measuring deformation volume of a harvest tank constituting member 9B constituting a harvest tank 9 and applied with a load of the harvest stored in the harvest tank 9, and a yield volume calculating part 5 for calculating volume of harvest stored in the harvest tank 9 based on the measured value by the deformation measurement apparatus 2.
