The invention discloses a smart power plant integrated monitoring and management system which comprises a smart management and control platform, a multi-energy flow IEMS network switch and a factory-level DCS; a smart management and control platform comprises a 10 Gigabit network switch, a server and a smart management and control platform administrator station; the server comprises a redundant real-time data server, a redundant non-real-time database server, a smart business decision-making application server, an energy trade transition application server and other software application servers; the server and the smart management and control platform administrator station are connected with the 10 Gigabit network switch; the factory-level DCS has two ways to upload externally; and the multi-energy flow IEMS network switch has two ways of upward interfaces. The system has the benefits that: a linkage application case after intelligent subsystems are accessed is planned, so that the design integrity of the smart power plant is stronger; combined with a DCS control system, the extension of automatic control range to the automatic control of the whole process operation is realized; and the smart power plant is endowed with the ability to integrate with the overall design of upper-level smart parks and smart cities.