A radio communication system, a radio communication method, a radio base station and a control station in which, even when a radio base station performs state control, radio parameters in neighboring base stations may efficiently and appropriately be self-optimized, are disclosed. The radio communication system includes a plurality of radio base stations (eNB1, eNB2 and eNB3) and a control station (O&M (OMC)) connected to the radio base stations. One of the radio base stations notifies state control information including information regarding the state control to the control station before or after execution of state control in the one radio base station. The control station notifies at least one of management information regarding the radio parameter updated in accordance with the state control and the state control information to the radio base stations connected to the control station, with the exclusion of the one radio base station that notified the state control information.