Flow processing circuit and method for supporting small service

The invention relates to a flow processing circuit and method for supporting small service. The flow processing circuit comprises a register access interface, a service flow manager, a service flow scheduler, a chain table storage manager, a dequeuing controller and an enqueuing controller. According to the flow processing circuit and method for supporting the small service, frames captured by the small service flow are repeatedly submitted with original flow features, after the small service flow is interrupted, the flow features of the small service flow are maintained, and service flow data can be efficiently utilized and dynamically managed in a chain table storer management mode. Accordingly, the storage efficiency of a network detection system is effectively improved, the small service flow is prevented from being lost, and real-time monitoring on the high-speed network small service flow and accurate analysis of all service flow distribution features in a network are guaranteed.