Abstract: Based on the construction requirement of intelligent plant, this article analyzes the difficulties of intelligent plant construction and the current status of digital plant construction, synchronizes the construction of digital plant and physical plant, and forms a method for digital delivery and a way of digital plant construction based on integrated engineering. Digital plant provides a solid foundation for the construction of intelligent plant. Digital delivery explores the best practice path for the construction of intelligent plant, and provides and forms the big data of plant for the owner, which accelerates the construction of intelligent plant and helps the progress from digitalization to intelligence.

Key words: intelligent plant, digitization, digital delivery, digital plant, integrated engineering