A mobile communication terminal includes: an antenna that performs transmission and reception of a wireless signal; a communication unit that performs communication with a base station by establishing a wireless communication line with the base station through the antenna; a memory unit that stores synchronization information of the wireless communication line established by the communication unit; a measuring unit that measures reception power level and signal quality of the wireless signal received by the antenna; and a cell search processor that detects the base station based on the synchronization information stored in the memory unit in a case where the reception power level is larger than a predetermined value and the signal quality is lower than a predetermined signal quality threshold value.