A technology is disclosed that provides a handover destination specification system and the like capable of reducing signaling load and shortening handover processing time. According to the technology, the handover destination specification system is configured by: a mobile terminal that measures a reception quality of each cell indicating an accessible range formed by a plurality of base stations capable of being connection targets of the mobile terminal, and when the measured reception quality satisfies a predetermined condition, transmits to a connection base station, a first message including identification information of the cell that satisfies the predetermined condition and information on the reception quality of the cell; and the connection base station that transmits to the mobile terminal, a second message including information for detecting unique global identification information of the cell of which the reception quality has been measured, based on the first message. The mobile terminal detects the global identification information of the cell of which the reception quality has been measured based on the second message, checks access permission for the detected cell, and when access permission is confirmed, transmits to the connection base station, a third message including the global identification information of the cell for which access permission is granted.