PROBLEM TO BE SOLVED: To provide a root crop harvester capable of adjusting a tread even when a machine body stops travelling and being hard to disturb a turning trajectory even when a weight balance is deflected.SOLUTION: The root crop harvester includes: right/left travel devices 6R and 6L travelling in a field a pull-out conveyance device 24 pulling out and harvesting a crop a conveyance device 87 conveying the harvested crop to a storage container 97 and a storage support member 112 supporting the storage container 97. One of the right/left travel devices 6R and 6L is constituted of right/left division travel devices 600R and 600L. Vertical position change members 612 changing a vertical height of the right/left division travel devices 600R and 600L respectively are provided. Movement adjustment members 606R and 606L moving the right/let division travel devices 600R and 600L in a right/left direction respectively are provided.SELECTED DRAWING: Figure 2
