The work aims to investigate the composition and main operating system of intelligent machinery plant. Based on the analysis of such two core objectives as the 4.0 industrial production feature of intelligence and intelligent manufacturing & intelligent plant, as well as the four characteristics, such as data, network, integration and transformation to be possessed by the intelligent plant, the necessity of transforming machinery plant into intelligent plant, the composition and main operating system of intelligent machinery plant, and the operation process of the intelligent machinery factory were analyzed and explored. The intelligent machinery factory should set up the intelligent network covering the plant space by building cyber physical system CPS. The intelligent operation of the intelligent machinery factory can be divided into intelligent ordering and payment, remote product development and design, intelligent production and intelligent logistics, and other systems; as 4.0 industrial is a gradual evolution process, the transformation of machinery plant into the intelligent plant should be provided with a complete solution.