PROBLEM TO BE SOLVED: To provide a combine capable of measuring the weight of grains stored in a grain tank with a high degree of precision.SOLUTION: The combine includes: a load cell 39 for measuring the weight of grains stored in the grain tank a measurement switch 66 for outputting a weight measurement signal a working state determination part 71 for determining a working state on whether the state is a working state or a non-working state from the states of a travel device, a harvesting part, and a threshing device and a weight measurement determination part 75 for instructing weight measurement to the load cell 39 on the basis of the weight measurement signal. When the weight measurement signal is output from the measurement switch 66, the weight measurement determination part 75 instructs working state determination to the working state determination part 71, and when it is determined that the state is a working state, does not instruct weight measurement to the load cell 39.