Provided is a mobile communication terminal test system that transmits a test signal formed by a plurality of downlink component carriers including a primary component carrier (DL_CC1) and a secondary component carrier (DL_CC2) to a mobile communication terminal to test the mobile communication terminal. The mobile communication terminal test system includes a primary test device that transmits first communication data including first test data to the mobile communication terminal using the primary component carrier of the test signal and a secondary test device that transmits second communication data including second test data to the mobile communication terminal using the secondary component carrier of the test signal.