An administration apparatus to administer an inhibitor drug to a patient to inhibit cell division of a malignant cell includes an administration unit configured to administer the inhibitor drug to the patient； an administration timing storage unit configured to store an administration time to start an administration of the inhibitor drug； a time measurement unit configured to measure a current time； and a control unit configured to drive and control the administration unit so as to administer the inhibitor drug to the patient when the current time coincides with the administration time. The administration time is set on a basis of a predetermined phase of a cell cycle of the malignant cell.
