A mobile station for performing communication using a specific communication system, comprising: reception means for receiving broadcast information from a plurality of communication base stations, the broadcast information for specifying cells which the mobile station can camp on and information on communication systems which can be used in the cells; acquisition means for acquiring a plurality of pieces of cell information on cells which the mobile station can camp on and on communication systems which can be used in the cells from the broadcast information received by the reception means; selection processing means for selecting one cell where a specific communication system can be used from the plurality of pieces of cell information acquired by the acquisition means, and performing processing for the mobile station to camp on the cell; characterized by: storage means for storing history information of camped cells which the mobile station has camped on, wherein the selection processing means selects one cell where the specific communication system can be used from the plurality of pieces of cell information based on the history information of camped cells stored in the storage means, and performs processing for the mobile station to camp on the cell; input means for inputting a correction value for correcting, in an increasing direction, a received signal level of the broadcast information in a cell indicated by the history information of camped cells stored in the storage means; wherein the selection processing means selects one cell where the specific communication system can be used from the plurality of pieces of cell information based on the received signal level corrected by the correction value which is input by the input means. reception means for receiving broadcast information from a plurality of communication base stations, the broadcast information for specifying cells which the mobile station can camp on and information on communication systems which can be used in the cells; acquisition means for acquiring a plurality of pieces of cell information on cells which the mobile station can camp on and on communication systems which can be used in the cells from the broadcast information received by the reception means; selection processing means for selecting one cell where a specific communication system can be used from the plurality of pieces of cell information acquired by the acquisition means, and performing processing for the mobile station to camp on the cell; characterized by: storage means for storing history information of camped cells which the mobile station has camped on, wherein the selection processing means selects one cell where the specific communication system can be used from the plurality of pieces of cell information based on the history information of camped cells stored in the storage means, and performs processing for the mobile station to camp on the cell; input means for inputting a correction value for correcting, in an increasing direction, a received signal level of the broadcast information in a cell indicated by the history information of camped cells stored in the storage means; wherein the selection processing means selects one cell where the specific communication system can be used from the plurality of pieces of cell information based on the received signal level corrected by the correction value which is input by the input means. storage means for storing history information of camped cells which the mobile station has camped on, wherein the selection processing means selects one cell where the specific communication system can be used from the plurality of pieces of cell information based on the history information of camped cells stored in the storage means, and performs processing for the mobile station to camp on the cell; input means for inputting a correction value for correcting, in an increasing direction, a received signal level of the broadcast information in a cell indicated by the history information of camped cells stored in the storage means; wherein the selection processing means selects one cell where the specific communication system can be used from the plurality of pieces of cell information based on the received signal level corrected by the correction value which is input by the input means.