A system and method of providing multimedia services regardless of data transfer rate degradation that occurs during implementation of multimedia services through a mobile communication network; including a main server and Bluetooth access points connected via the Internet, and a portable terminal including a Bluetooth module with wireless access to the Internet via the mobile communication network. The main server transfers multimedia data to the portable terminal via the mobile communication network or via a Bluetooth access point. in response to a service request, and the portable terminal typically receives multimedia data via the mobile communication network, but will receive multimedia data via the Bluetooth access point when the transfer rate reaches or falls below a reference value, thereby continuously receiving the multimedia data via the Bluetooth access point in place of the mobile communication network.