This invention discloses a method for processing switch charge in a WiMAX network including: a, a charge point creates correlation ID of service flows for users against user service flows, if the charge point is switched, then a user data recording file containing said correlation ID is loaded in the switched information to be sent to a destination base station or a gateway of an access network, if the charge point is not changed, then the service flow correlation ID is not changed when the user terminal is switched, b, the charge server uses said ID to charge for the terminal, which keeps theservice flow correlation ID of a user unchanged so as to finish a charge operation flow without intercepting service flows.