To provide a traveling work machine that prevents an operator from having an unnecessary sense of distrust.SOLUTION: A traveling work machine includes a traveling machine body C traveling in a field, a working device W working in the field, a path setting unit for setting a first path for work traveling in which the traveling machine body C travels while working by the working device, and a displacement amount calculation unit for calculating a displacement amount SH between a position of the traveling machine body C and a first path based on the position of the traveling machine body C acquired by a position acquisition unit. The path setting unit sets a second path different from the first path for the work traveling in which the traveling machine body C travels while working by the working device W, based on the position of the traveling machine body C acquired by the position acquisition unit, when the displacement amount SH calculated by the displacement amount calculation unit is not more than a first threshold S1.SELECTED DRAWING: Figure 12【課題】運転者に不要な不信感を与えることが抑制された走行作業機を提供する。【解決手段】圃場を走行する走行機体Ｃと、圃場に対する作業を行う作業装置Ｗと、走行機体Ｃが作業装置による作業を行いつつ走行する作業走行のための第１経路を設定する経路設定部と、位置取得部が取得した走行機体Ｃの位置に基づいて、走行機体Ｃの位置と第１経路との間のずれ量ＳＨを算定するずれ量算定部と、が備えられ、経路設定部は、ずれ量算定部が算定したずれ量ＳＨが第１閾値Ｓ１以下である場合に、走行機体Ｃが作業装置Ｗによる作業を行いつつ走行する作業走行のための、第１経路とは異なる第２経路を、位置取得部が取得した走行機体Ｃの位置に基づいて設定する。【選択図】図１２
