An autonomously traveling work vehicle 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 for causing the autonomously traveling work vehicle to automatically work and travel along a set travel route wherein a person detection sensor is provided to the autonomously traveling work vehicle and connected to the control device, and the control device performs a control so as to stop the autonomously traveling work vehicle from traveling when, while work is being performed during autonomous travel within a set work area, the person detection sensor 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.
