A printing system includes: a transport belt that configured to support and transport a medium, a liquid jetting unit configured to perform a printing operation by jetting a liquid to the medium, a storage tank that is an example of a cleaning liquid storage unit configured to store a cleaning liquid, a cleaning unit configured to perform a cleaning operation of the transporting belt using the cleaning liquid stored in the storage tank, a coagulation tank configured to store the cleaning liquid used for cleaning operation and to which a coagulating agent is added, and a separation unit configured to separate, from the cleaning liquid, a coagulated material produced by coagulation caused by adding the coagulating agent to the cleaning liquid. The cleaning liquid from which the coagulated material is separated by the separation unit is supplied to the storage tank.