This combine is provided with: a plurality of cameras that acquire periphery video, which is video of the periphery of the machine in question a storage unit that stores a plan view of the machine in question and the position of a crawler unit in the plan view and a display unit. The combine generates an overhead view video that is a mockup video seen from above the machine in question on the basis of the periphery video acquired by the cameras and the plan view of the machine in question stored in the storage unit. The combine displays, at a display unit, the overhead view video containing a grain culm conveyance video or a crawler image (12a), which is an image indicating the crawler unit.聯合收穫機係具備取得所操作之聯合收穫機周遭的影像即周遭影像的複數之攝影機、儲存所操作之聯合收穫機之俯視圖及該俯視圖中履帶部的位置之儲存部、及顯示部。聯合收穫機係基於攝影機所取得之周遭影像、及儲存部儲存的所操作之聯合收穫機之俯視圖,製作自上方觀察所操作之聯合收穫機而得之虛擬影像即鳥瞰影像。聯合收穫機係在顯示部中顯示包含表示履帶部之圖像即履帶圖像(12a)或包含穀桿運送影像之鳥瞰影像。10a‧‧‧聯合收穫機圖像12a‧‧‧履帶影像12b‧‧‧虛擬延長部44‧‧‧顯示部74‧‧‧踏板78‧‧‧交界線
