The present invention relates to a test system for displaying log information about the communication of a plurality of pseudo-base stations such that each pseudo-base station can be identified. A mobile communication terminal test system includes a display device which is connected to a plurality of pseudo-base station apparatuses through a network, receives a packet transmitted from each of the plurality of pseudo-base station apparatuses, and displays a communication log between layers on a display unit on the basis of log data included in the packet. The display device includes an information storage unit that stores information associated with the address of each of the plurality of pseudo-base station apparatuses in advance and a log data storage unit that stores the log data such that the pseudo-base station apparatus which has performed the communication can be identified.