The invention discloses an access network flow scheduling system and method based on content.A software-defined networking (SDN) technology is utilized for opening an access network interface, and the problem that due to the fact that the data transmission needs of multiple types of applications cannot be met through a best mode in a traditional network, user experience is poor through a programmable mode.According to the access network flow scheduling system and method based on content, network flow is divided into three classes, namely, interactive network flow, video flow and other background flow according to the preference of a user to different applications and the transmission needs of the applications, different kinds of network flow are distinguished through application layer information in network data packages, low-delay transmission is provided for the interactive network flow, and a minimum bandwidth is provided for the video network flow to guarantee that the aim of improving the overall network experience of the user in the network is achieved.