Abstract: The information system construction of PetroChina has entered into a stage of massively version upgrading. It is significant for all information systems to grasp the rules of version-upgrade and improve the application effect.Pipeline Production Management System is PetroChina's first information system with its version upgraded.The key points for the system version upgrading involve three aspects: feasibility study, system design and version compatibility. For feasibility study, it is necessary to analyze and evaluate the in-service systems and to investigate the necessity of system upgrading for business development and technical improvement. For system design, the stress lies in the selection of incremental or reconstruction design methods according to different design content. For version compatibility, attention should be paid to the compatibility of historical data, historical reports and external system interfaces. Pipeline Production Management System 2.0 has been completely constructed according to planning and feasibility study. Its application results were remarkable after it was put into operation. In the Version 2.0, the Version 1.0 is seamlessly compatible in terms of business data, system interfaces and reports, and its friendly design of customizing interfaces is kept so as to guarantee the continuity of the business. The upstream, midstream and downstream information resources of pipelines are integrated, so the decision making power on production management is strengthened. The business of each level is processed automatically in the normalized way and the data is processed electronically, so the operation efficiency is increased. The upgraded forms, reports and professional computing capacity are essentially improved. In general, it is highly appraised.