Method for providing multimedia streaming service in SIP-based network

A method for providing a multimedia streaming service by using an SIP-based communication network is provided to secure multimedia streaming service quality supported in the SIP-based communication network and charge a fee according to the amount of used packets. A method for providing a multimedia streaming service by using an SIP(Session Initiation Protocol)-based communication network comprises the following steps of: allowing a user terminal(10) to convert a message for requesting streaming service path setting and desired streaming information into an INVITE message by an SIP and provide the INVITE message to a streaming server(11); allowing the streaming server to transmit the proceed message of path setting to the user terminal in response to the request of the path setting; allowing the user terminal to request its own network resource control server(14-1) to allocate network resources for receiving the streaming server to the user terminal and to receive the network resource; allowing the streaming server to request its own network resource control server(14-2) to allocate network resources for providing the streaming service to the streaming server; and allowing the streaming server to transmit a path setting completion message to the user terminal and setting a path for implementing the streaming service.