PROBLEM TO BE SOLVED: To provide a combine capable of performing manual feed threshing work conveniently and effectively.SOLUTION: The combine includes: a grain culm conveyance device FA driven by an engine 40 and conveying grain culms reaped in a reaping section 3 to a threshing device 7 a manual feed threshing culms feed section 8 for feeding the grain culms manually to the grain culm conveyance device FA in manual feed threshing work a manual feed threshing gate 80 in which a state is changeable between a feed allowable state allowing manual feed of the grain culms and a feed prohibited state prohibiting the manual feed of the grain culms a transition trigger command section 62 commanding a transition trigger from reaping threshing control to manual feed threshing control when confirming stop of a machine body, stop of the reaping section 3, and drive of the threshing device 7 on the basis of detection result of an operation state detection section 70 during the reaping threshing control and a manual feed threshing control section 52 reducing an engine speed to a set low speed in response to the transition trigger, and switching the manual feed threshing gate 80 from the feed prohibited state to the feed allowable state.