The SVN development library is a common means for content management such as data, workflow, development process, objects/attributes/versions, etc. in the whole life cycle of civil aircraft development. A good development library construction and management scheme can not only ensure the implementation of data changes and the effective tracking of data status, but also realize the orderly establishment and close correlation of aircraft system design database, team management database and output database in each development stage, so as to effectively improve the efficiency of data management. By analyzing the use scenarios of SVN library of original equipment manufacturers, system suppliers/primary suppliers, sub suppliers and other suppliers at all levels in the process of civil aircraft development, extracting the common problems of SVN library in daily use, combined with the typical working modes and management scheme of other common development libraries, such as PDM and CQ, this paper gives a proposal for the construction and management of typical SVN library of civil aircraft system based on project input-output and actual system configuration division. Otherwise, this paper also defines some key points that need to be focused on during the process of SVN library construction and management.