Abstract: Abstract：Through close integration between new technologies, such as information technology and traditional petrochemical industry, new refinery-technology breakthroughs have been made to realize intelligent manufacturing and information integration, and improve production and management efficiency and lower production cost. The development trends of planning and optimization in refining and petrochemical industry is to realize the integration of various sectors, to simulate the process of production and operations relying on models and make planning more close to reality. Combining the design of the Advanced Planning System of PetroChina , this paper introduces the overall planning design of a multi-plant model, including various ways of expression of different aspects（raw material supply, production, transport and logistics, inter-company feed, product sales and inventory）in the model.