The present disclosure refers to a division map creation system (1) for creating a division map obtained by dividing a work field (3) in which work vehicles (2) are configured to travel into a plurality of sections. The system (1) includes: a work field information acquisition unit (10) to acquire work field information including position information indicating a position of the work field (3) and shape information indicating a shape of the work field (3)； a route information acquisition unit (20) to acquire route information indicating individual travel routes when the work vehicles (2) travel on the work field (3) based on the work field information； a division map creation unit (30) to create the division map in accordance with a work width of work performed when the work vehicles (2) travel in the work field (3) based on the route information and a travel direction of the work vehicles (2) during traveling； and a storage unit (40) to store the division map created by the division map creation unit (30) in association with the work vehicles (2). Further, a method for creating a division map is provided.
