An agricultural field work vehicle, comprising: a vehicle position calculating section configured to calculate, as a vehicle position, a position of a vehicle body of the agricultural field work vehicle in an agricultural field; an autonomous travel control section configured to steer the vehicle body so that the vehicle body travels autonomously along each of a plurality of target travel paths with a U-turn travel path in-between, each target travel path being set to extend linearly from a starting point position to an ending end position; a move-off recording section configured to record, as move-off information, either or both of a move-off position (Pb) and a move-off travel path, the move-off information being information related to the vehicle body having moved off the target travel path while performing agricultural field work during the autonomous travel, the move-off position (Pb) being the vehicle position at a time when the vehicle body moved off the target travel path, the move-off travel path being the target travel path off which the vehicle body moved; and a work return management section configured to (i) select a resumption travel path on a basis of the move-off information, the resumption travel path being the target travel path on which the agricultural field work vehicle, after the vehicle body moved off the target travel path, resumes performing the agricultural field work during the autonomous travel, and (ii) manage a return of the vehicle body to the resumption travel path or a return of the vehicle body to the move-off position (Pb), characterized in that the work return management section includes a determining section configured to determine, while the agricultural field work vehicle is being manually driven for the vehicle body to return to the resumption travel path, whether the agricultural field work vehicle is able to transition from manual travel to autonomous travel, the resumption travel path is the target travel path having the move-off position (Pb) partway, in response to a benchmark point of the vehicle body entering a zone extending over a predetermined distance from a line segment between the starting point position and the move-off position (Pb) of the resumption travel path, the determining section determines that the agricultural field work vehicle is able to transition to the autonomous travel, and the resumption travel path has a resumption position (Pr) at which the agricultural field work vehicle resumes performing the agricultural field work during the autonomous travel, the resumption position (Pr) being on the line segment. a vehicle position calculating section configured to calculate, as a vehicle position, a position of a vehicle body of the agricultural field work vehicle in an agricultural field; an autonomous travel control section configured to steer the vehicle body so that the vehicle body travels autonomously along each of a plurality of target travel paths with a U-turn travel path in-between, each target travel path being set to extend linearly from a starting point position to an ending end position; a move-off recording section configured to record, as move-off information, either or both of a move-off position (Pb) and a move-off travel path, the move-off information being information related to the vehicle body having moved off the target travel path while performing agricultural field work during the autonomous travel, the move-off position (Pb) being the vehicle position at a time when the vehicle body moved off the target travel path, the move-off travel path being the target travel path off which the vehicle body moved; and a work return management section configured to (i) select a resumption travel path on a basis of the move-off information, the resumption travel path being the target travel path on which the agricultural field work vehicle, after the vehicle body moved off the target travel path, resumes performing the agricultural field work during the autonomous travel, and (ii) manage a return of the vehicle body to the resumption travel path or a return of the vehicle body to the move-off position (Pb), characterized in that the work return management section includes a determining section configured to determine, while the agricultural field work vehicle is being manually driven for the vehicle body to return to the resumption travel path, whether the agricultural field work vehicle is able to transition from manual travel to autonomous travel, the resumption travel path is the target travel path having the move-off position (Pb) partway, in response to a benchmark point of the vehicle body entering a zone extending over a predetermined distance from a line segment between the starting point position and the move-off position (Pb) of the resumption travel path, the determining section determines that the agricultural field work vehicle is able to transition to the autonomous travel, and the resumption travel path has a resumption position (Pr) at which the agricultural field work vehicle resumes performing the agricultural field work during the autonomous travel, the resumption position (Pr) being on the line segment.