A liquid storage system includes a liquid container having a plurality of through holes of a nano-size from which volatile liquid contained in the liquid container is led outside by capillary action, and photocatalytic films provided on surfaces of the through holes, the photocatalytic films being hydrophilic during light irradiation, an irradiation unit configured to irradiate the photocatalytic films with light, and a control unit configured to control the irradiation unit in accordance with an amount of the volatile liquid to be led outside.