Problem to be solved: to obtain a field work machine in which the running state without the work is reduced and the state in which the running area once again is reduced.A positioning section for detecting the position of the airframe is provided.The first work step S11 for running the airframe along the ridge of the field in the field is carried out, and the width of the airframe is set from the work area of the first work stroke S11 to the center side of the field based on the detection of the positioning section, and the width of the field is set along the working area of the first work stroke A traveling path acquiring section for acquiring the running path L21 of the second task stroke S21 is provided.Diagram【課題】作業を行わずに走行する状態が少なくなり、１度走行した領域を再び走行する状態が少なくなる圃場作業機を得る。【解決手段】機体の位置を検出する測位部が備えられる。圃場の畦際を圃場の畦Ａ１に沿って機体を走行させる第１作業行程Ｓ１１が行われることにより、測位部の検出に基いて第１作業行程Ｓ１１の作業領域から圃場の中央側に、機体の走行が可能な横幅を開けて、第１作業行程Ｓ１１の作業領域に沿って設定された第２作業行程Ｓ２１の走行経路Ｌ２１を取得する走行経路取得部が備えられる。【選択図】図６
