PROBLEM TO BE SOLVED: To provide a grain harvester which can progress harvest work while quickly evaluating a yield, taste or the like of harvested grains.SOLUTION: A grain harvester 1 comprises: a grain tank 15 for accommodating grains sent from a thresher 14 which applies threshing treatment to grain culms threshed from a farm field a yield sensor 21 for measuring an yield of the grains a taste sensor 22 for measuring the taste of the grains a measurement data management part 61 for managing yield measurement data inputted from the yield sensor 21 and taste measurement data inputted from the taste sensor 22 in time series and a harvest evaluation part 62 for generating harvest grain characteristic information by linking the farm field, the yield measurement data and the taste measurement data to one another.
