A configuration of a wireless cell contained by a wireless network control station in a wireless access network is optimized to efficiently achieve leveling of a processing load in the wireless network control station. A wireless access network management device inputs input information including position information of a wireless cell, traffic demand of each wireless cell, location registration demand of each wireless cell, handover demand with respect to each adjacent wireless cells of each wireless cell, and internal processing time required by a wireless network control station for traffic processing, location registration processing, and handover processing. Then, a wireless cell group to be controlled by a wireless network control station is selected based on the input information so that processing loads of a plurality of wireless network control station are leveled.