Network traffic classification method and system

The invention relates to the technical field of flow data processing, and discloses a network flow classification method and system, and the method comprises the steps: obtaining network flow data, and extracting a flow corresponding to the network flow data; dividing the stream into a plurality of sessions; conversations with the same communication direction are aggregated into a grouping block; the grouping blocks are converted into two-dimensional gray scale grouping images; sequentially performing modal conversion and image recognition on the two-dimensional gray scale grouped images to obtain an image recognition text sequence; and classifying the image recognition text sequence by using a classifier to obtain the application type of the network traffic. According to the invention, the unknown network traffic can be accurately detected and identified, and the classification effect and efficiency of the network traffic are improved. 本发明涉及流量数据处理技术领域，公开了一种网络流量分类方法及系统，所述方法包括：获取网络流量数据，并提取网络流量数据的对应的流；将所述流划分为若干