The present disclosure is related to a method for regenerating an adsorber which has a porous body and does not have an enzyme. The present method includes a dialysis step, in which an adsorber 40 is connected to a dialysate circulation unit 20 to cause uremic substances within a dialysate to be adsorbed onto the adsorber 40, and a regenerating step, in which the uremic substances which are adsorbed on the adsorber 40 are desorbed by regenerating water that flows in a regenerating water flow unit 50. A dialysis system 100 is equipped with the dialysate circulation unit the adsorber 40 which is connected to the dialysate circulation unit 20, has a porous body, and does not have an enzyme, and the regenerating water flow unit 50. The regenerating water flow unit 50 is connectable to the adsorber 40.
