The development of city agent puts forward new requirements for network system. As an important branch of city agent, public security agent also has a further demand for the network, which needs the network to be more active, fast and flexible to support its development. Another requirement of the network is to be more intelligent. Considering these issues, this paper investigates the Artificial Intelligence (AI) network architecture based on public security agent. We also propose a platform framework of public security agent and the AI network architecture based on public security agent. Finally, some application scenarios in the field of public security are given.