A liquid circulation system to be installed in a liquid discharging machine for discharging liquid, comprising: a liquid discharge head having a plurality of nozzles for discharging liquid and a shared flowing route; a liquid container for storing the liquid to be supplied to the liquid discharge head, wherein said shared flowing route is a flow path through which ink is supplied from the liquid container said shared flowing route having one end and the other end, and said liquid circulation system further comprising: a first flowing route for supplying the liquid from the liquid container to one end of the shared flowing route; a second flowing route for refluxing the liquid from the other end of the shared flowing route to the liquid container; a differential pressure generating section for generating a differential pressure between a supply port, through which the liquid is supplied from the liquid container to the first flowing route, and a reflux port, through which the liquid is refluxed from the second flowing route to the liquid container, in the liquid stored in the liquid container, the differential pressure generating section including a rotor placed in the liquid container and a rotary driving section for turning the rotor; and a partition plate for partitioning an internal area of the liquid container into an upper area and a lower area, said partition plate having a center opening and a plurality of surrounding openings, wherein said rotor comprises an impeller positioned inside the liquid container and under the partition plate, and said rotary driving section comprises a drive unit placed outside the liquid container. a liquid discharge head having a plurality of nozzles for discharging liquid and a shared flowing route; a liquid container for storing the liquid to be supplied to the liquid discharge head, wherein said shared flowing route is a flow path through which ink is supplied from the liquid container said shared flowing route having one end and the other end, and said liquid circulation system further comprising: a first flowing route for supplying the liquid from the liquid container to one end of the shared flowing route; a second flowing route for refluxing the liquid from the other end of the shared flowing route to the liquid container; a differential pressure generating section for generating a differential pressure between a supply port, through which the liquid is supplied from the liquid container to the first flowing route, and a reflux port, through which the liquid is refluxed from the second flowing route to the liquid container, in the liquid stored in the liquid container, the differential pressure generating section including a rotor placed in the liquid container and a rotary driving section for turning the rotor; and a partition plate for partitioning an internal area of the liquid container into an upper area and a lower area, said partition plate having a center opening and a plurality of surrounding openings, wherein said rotor comprises an impeller positioned inside the liquid container and under the partition plate, and said rotary driving section comprises a drive unit placed outside the liquid container. a first flowing route for supplying the liquid from the liquid container to one end of the shared flowing route; a second flowing route for refluxing the liquid from the other end of the shared flowing route to the liquid container; a differential pressure generating section for generating a differential pressure between a supply port, through which the liquid is supplied from the liquid container to the first flowing route, and a reflux port, through which the liquid is refluxed from the second flowing route to the liquid container, in the liquid stored in the liquid container, the differential pressure generating section including a rotor placed in the liquid container and a rotary driving section for turning the rotor; and a partition plate for partitioning an internal area of the liquid container into an upper area and a lower area, said partition plate having a center opening and a plurality of surrounding openings, wherein said rotor comprises an impeller positioned inside the liquid container and under the partition plate, and said rotary driving section comprises a drive unit placed outside the liquid container.