Under the dual carbon policy, thermal power units will participate in deep peak shaving more frequently. Under this working condition, equipment will be in more off-design working conditions, which will lead to more prominent safety problems in unit operation. Based on the research of intelligent power plant related technical specification and on the basis of predecessors' research, expounded the meaning of the intelligent power plant, and puts forward the functional architecture of production intelligence system in thermal power plants, through intelligent detection, intelligent monitoring plate, performance analysis, intelligent diagnosis and intelligent control of five functional integration, the power generation process more secure, efficient and environmentally friendly.