A method is provided for flow identification of a mobile terminal. The method includes obtaining flow data files of the mobile terminal at two or more points of time after the mobile terminal connects to a network using same network access means. The method also includes comparing, from the obtained flow data files, flow volumes in the flow data files having a same flow identifier to determine a flow identifier in the flow data file with changing flow volumes. Further, the method includes, based on the determined flow identifier in the flow data files with changing flow volumes and the network access means used by the mobile terminal to connect to the network, identifying network access means indicated by the flow identifier in the flow data files and obtaining flow identification results.