Research conclusions: It is very necessary to make abroad applications of information system for civil projects，and basic conditions have been in use. Major requirements of the system are a multilayer management structure，a new construction procedure focusing on data management，and an integration system covering construction cycle of projects. To strengthen adaptability of the system to new surroundings focusing on project management and to build knowledge- repositories of projects by accumulating project information are also very important. The key contents of the system are to make standardization of work breakdown structures，to combine the system with general systems and industry software seamlessly，and to construct enterprise quotas which can response objective costs for different enterprise.