Large Software Project Implementation

China has joined the WTO for nearly five years, to face the more and more open market and the severe competition of overseas merchant, lots of the domestic enterprise take measures to overcome these instance, implementation of informationalization in enterprise is one of the measures. However the low success ratio of the software implements is restricting the enthusiasm of enterprises. This thesis starts with the research of methods in software implements, in order to achieve the goal of enhancing the ratio of the software implements.The thoughts of this thesis is to take the software project management as a methodology, to take the knowledge of ERP software and informationalization as basic support, to combine the domestic and foreign implementation methods, and to take the information balance as the connotation, in order to summarize a set of implementation methods which aims at the large-scale software projects based in the massive practices, and carries the methods on the case to confirm the exactness.First, this thesis summarizes the knowledge of project management and the software project management, and presents detail content of software project cycle template and software project management. Because the project management is a set of mature theories, the implementation method research bases on this platform, follows its rule and the perfect methods can achieve the goal of practicality and high efficiency.Then, this thesis expatiates the ERP and informationalization in enterprise. To take the representative's software of ERP as the implementation content is important to the implementation method research. This thesis analyzes the influence to the topic in the angle of ERP. Informationalization is the goal of software implements, also is the goal of the implementation method research. From the analysis we can understand what to do in software implementation, and according this to establish the suitable implementation method.After making full summary, thesis analyzes the the present situation of software implements, and discussing the selection of software and the existing methods in domestic and foreign. Then thesis emphasizes on the elaboration of information balance which is the brand-new viewpoint the author proposes. The information balance is to grasp the software implements process from the whole system which will pass through the entire process. After presents the detailed new method, the author confirms the methods through two cases, and appraises the success and failure, and then confirms the new methods is feasible.Finally, the author makes the summary and the forecast of the whole article, and considers the main trend of software project implementation research is standardization and "humanist", even more takes human's factor, may conduct more thorough research in these aspects.