PROBLEM TO BE SOLVED: To improve safety in imaging by preventing a person other than a person permitted to perform radiation irradiation from performing radiation irradiation.SOLUTION: A radiation irradiation system comprises: a radiation irradiation part which irradiates with a radiation an operation instruction part which instructs irradiation of the radiation by the radiation irradiation part a biological information acquisition part which acquires biological information of an operator operating the operation instruction part an operator identification part which identifies the operator on the basis of the biological information acquired by the biological information acquisition part and a control part which controls propriety of irradiation of the radiation by the radiation irradiation part on the basis of the identification information of the operator identified by the operator identification part.COPYRIGHT: (C)2016,JPO&INPIT