Roaming policy and charging control method and system

The provided cruise strategy and charge control method comprises: A. V-PCRF receives the authorized query from AGW to obtain application message from AF; B. V-PCRF sets the access strategy and charge rule according to obtained message and local strategy, and sends the result to AGW; and C. the latter executes the strategy and charge control to UE. This invention reduces signaling delay, and improves efficiency.