[Problem] To enable the easy setting of a travel path even if an autonomous travel work vehicle that travels autonomously is at a deformed farm field. [Solution] In the method for setting the travel path along which an autonomous travel work vehicle (1) works while traveling autonomously by apprehending the position of the autonomous travel work vehicle (1) using a satellite positioning system in order to perform farm field surface work by means of the autonomous travel work vehicle (1) being caused to travel from one end to the other end of a farm field (H), the following are performed: a step for inputting the front-back length of a machine body a step for inputting the width of the work machine a step for inputting a work machine (24) and the amount of overlap in the width direction of the work machine a step for measuring the position of the machine body using a satellite positioning system at each position by sequentially positioning the work vehicle at the points of inflection of the outer periphery of the farm field a step for setting a work range in the farm field a step for setting an entrance/exit a step for setting a baseline travel start direction a step for setting a headland (HB) at both ends of the work range (HA) and a step for setting the travel path (R) in the farm field.Le problème décrit par linvention est de faciliter la définition dun trajet de déplacement y compris si un véhicule de travail à déplacement autonome qui se déplace de manière autonome se trouve dans un champ agricole déformé. La solution selon linvention porte sur un procédé de définition du trajet de déplacement le long duquel un véhicule de travail à déplacement autonome (1) travaille tout en se déplaçant de manière autonome en appréhendant la position du véhicule de travail à déplacement autonome (1) au moyen dun système de positionnement par satellite afin dexécuter un travail de surface de champ agricole selon lequel le véhicule de travail à déplacement autonome (1) est amené
