To improve the operation efficiency of a reaping speed change apparatus when the reaping speed change apparatus is installed in a reaping transmission system in a reaping speed change structure of a reaping harvester.

The reaping transmission system is branched from the space between a traveling speed change apparatus 7 and a traveling apparatus 1 and composed so as to transmit power to a reaping part 2. The reaping speed change apparatus 15 is installed in the reaping transmission system and an actuator 16 for operating the reaping speed change apparatus 15 is provided. An artificially operated speed change operation tool 19 for operating the actuator 16 is installed in a speed change lever 17 of the traveling speed change apparatus 7.