The present invention provides a novel medicament for preventing or inhibiting acute kidney injury, the medicament comprising, as an active ingredient, an angiotensin II receptor type 2 agonist or a pharmacologically acceptable salt thereof, and being used for treatment or prevention of acute kidney injury. Also, the present invention provides a novel method for preventing or inhibiting acute kidney injury, the method comprising administering, to a patient, an effective amount of an angiotensin II receptor type 2 agonist or a pharmacologically acceptable salt thereof in combination with an anticancer agent and/or an antitumor agent.
