Smart city network convergence and security management system

The invention relates to the technical field of smart city information and particularly relates to a smart city network convergence and security management system. The system comprises a big data security integrated management platform, a business monitoring platform, an operation and maintenance management platform, a smart security management and control platform, a database auditing platform, an account centralized management and auditing platform, a digital certificate and authentication service platform, a smart traffic distribution switch and an SNMP server. Through adoption of a mechanism of communicating with a server according to layered application service, the interconnection with different levels and different types of databases is realized based on a virtualized database platform engine; and a network operation state, a network security state, network operation parameters and set indexes, network device faults and maintenance information are displayed through adoption of avisual interface, so the