To provide an automatic operation system for a work vehicle capable of suppressing inappropriate travel due to automatic operation even when a position of a field itself is moved.SOLUTION: An automatic operation system is configured to have a movement positioning device 174 for measuring a self position of a work vehicle 1, provide a ground positioning device 175 for being fixed on a ground for measuring a position in a field or in the vicinity of a boundary of a field F, and have a control part 120 for determining a shape of a field. The control part 120 stores a preset planned travel path PP, and when the ground positioning device 175 detects movement of the field, the control part regulates automatic travel of the work vehicle 1 along the planned travel path PP.SELECTED DRAWING: Figure 7【課題】圃場自体の位置が移動しても自動運転による不適切な走行を抑制できる作業車両の自動運転システムを提供する。【解決策】作業車両１の自己位置を測定する移動測位装置１７４を有し、地上に固定して位置を測定する地上測位装置１７５を圃場内または圃場Ｆの境界線近傍に設け、圃場形状を判定する制御部１２０を有し、前記制御部１２０は予め設定された予定走行経路ＰＰを記憶し、地上測位装置１７５により圃場の移動が検知された場合、前記予定走行経路ＰＰに沿った前記作業車両１の自動走行を規制する。【選択図】図７
