A base station congestion management includes at least one data management unit to which a plurality of communication monitoring apparatuses input the base station bandwidth information and the subscriber information, a shared data store to store base station bandwidth usage information and information of list of subscriber existing within base station coverage, and a congestion management unit to determine whether congestion is occurring at the base station. The data management unit calculates a total value of a used bandwidth for each base station, updates the base station bandwidth usage information, and updates the list of subscriber identification information of a user terminal connected with the base station. The congestion management unit identifies the subscriber identification information of the user terminal connected with the base station where congestion is occurring.