An intelligent service system and method are provided. The method includes: receiving a calling information transmitted by a switching device through an Internet-protocol-based call control protocol and which carries the identification information of the service control function requested by the call as well as the identification information of the call; parsing the received calling information, and after the identification information of the service control function and the identification information of this calling are obtained, initiating an assist request to the service control device; receiving the resource operation instruction, and supplying service resource service accordingly; said instruction is sent out by the service control device after said device has received the assist request and according to the service requirement. The media stream leading to the media gateway is established through the media stream transport protocol based on the Internet protocol. The method simplifies the management and maintenance of the intelligent service network.