the embodiments of this invention disclose a method and system for forwarding traffic in a bearer network . the method includes : a ca related to a service call instructing a bearer network resource manager managed by the ca to allocate a qos policy and reserve resources for the service call ; the bearer network resource manager issuing the qos policy to an edge device in a management domain managed by the bearer network resource manager ; the edge device forwarding traffic matching the qos policy after bearer network resource managers managed by cas related to the service call successfully allocate qos policies and reserve resources . with the embodiments of this invention , the bearer network may be controlled precisely whether to forward traffic , and thus it may be avoided effectively that traffic is imported into the bearer network before the service connection is established so as to acquire exact service data amount .