A fuel supply and collection system comprising: a delivery vehicle having a supply-fuel tank, a collection-fuel tank, a remaining supply-fuel quantity sensor for detecting a remaining fuel quantity of the supply-fuel tank, a remaining collection-fuel quantity sensor for detecting a remaining fuel quantity of the collection-fuel tank, and a display unit; a plurality of fuel stations having a supply-fuel tank, a collection-fuel tank, a remaining supply-fuel quantity sensor for detecting a remaining fuel quantity of the supply-fuel tank, and a remaining collection-fuel quantity sensor for detecting a remaining fuel quantity of the collection-fuel tank; and a central information processing center having an information processing apparatus; wherein, the remaining supply-fuel and collection-fuel quantities of the delivery vehicle and the remaining supply-fuel and collection-fuel quantities of each fuel station are estimated in the information processing apparatus from remaining supply-fuel quantity data and remaining collection-fuel quantity data detected in the delivery vehicle and remaining supply-fuel quantity data and remaining collection-fuel quantity data detected at each of the fuel stations; supply and collection priority order of each fuel station are calculated from the estimated remaining supply-fuel and collection-fuel quantity data of each fuel station; a driving route of the delivery vehicle is determined based on the estimated remaining supply-fuel and collection-fuel quantity data of the delivery vehicle and the supply and collection priority order of each fuel station; and the determined driving route is displayed on the display unit in the delivery vehicle.