The purpose is to provide a discharge system that adopts an optimal structure for connecting a discharging device to a refilling device in a substantially aligned fashion by moving the discharging device. A discharge system includes a discharging device, a refilling device, a discharge-side coupler, a refill-side coupler, and a manipulator. The discharge-side coupler is connectable to the refill-side coupler by relatively moving the discharge-side coupler in an axial line N direction of the refill-side coupler and fluid can be refilled from the refilling device side to the discharging device side. A coupling position between the manipulator and the discharging device reaches on the axial line N when connecting the refill-side coupler and the discharge-side coupler.