Under the existing refined oil logistics and distribution system,the cost of refined oil logistics and distribution keeps increasing,and this rigid cost growth has become the major obstacle to business improvement. In this paper,the authors discuss the reality and disadvantages of refined oil logistics and distribution in Sichuan Marketing Company of PetroChina. And then by calculus reasoning based on mature logistics and transport optimization model,and via reform of the institutional mechanisms and processes reengineering of refined oil logistics and distribution,we establish an optimized logistics and distribution system which double centralizes both the “depots and resources”,and can thereby reduces the cost of transportation,and improve the efficiency of distribution.