To provide a radio communication terminal device of simple structure that can achieve compact and inexpensive device constitution, can divert a radio communication module such as an existent mobile phone radio communication module and an existent radio LAN module, and can suppress the number of terminals of a high-frequency line, and to provide an RFID module.

The radio communication terminal device is provided with an antenna section 10, a wireless LAN communication section (or a mobile phone radio communication section) 20 for performing transmission and reception of wireless LAN communication (or mobile phone radio communication), and an RFID radio communication section 30 for performing transmission and reception of RFID radio communication, wherein the RFID radio communication section 30 is arranged between the antenna section 10 and wireless LAN communication section (or the mobile phone radio communication section) 20, and the radio communication terminal device uses an oscillator 21 of the wireless LAN communication section (or the mobile phone radio communication section) 20 to perform the transmission and reception of RFID radio communication by the RFID radio communication section 30 through the antenna section 10.