An autonomously traveling work vehicle (1) provided with: a position calculation means for using a satellite positioning system to measure the position of the vehicle body so that, when a person approaches the autonomous travel work vehicle, the person or an operator will be alerted and safety can be improved and a control device (30) for causing the autonomously traveling work vehicle to automatically work and travel along a set travel route wherein a person detection sensor (70) is provided to the autonomously traveling work vehicle (1) and connected to the control device (30), and the control device (30) performs a control so as to stop the autonomously traveling work vehicle (1) from traveling when, while work is being performed during autonomous travel within a set work area, the person detection sensor (70) detects a person within a fan-shaped first setting range having, as the radius, the maximum distance for the vehicle body to come to a stop after the intrusion of a person is detected while the vehicle is traveling at a working speed.
