Embodiments of the present invention provide a system, method, and device for processing air interface information. An enhanced base station includes: a receiver, configured to receive, through an open interface, an air interface control policy sent by a radio access network controller having an air interface control function of a radio access network; and a processor, configured to process air interface user plane data according to the air interface control policy. The technical solutions provided by the embodiments of the present invention implement separation of a control plane and a user plane of the radio access network through the radio access network controller and the enhanced base station.