The administrative management system of Jiangbei area in Nanjing should be sorted out urgently and a new system scheme should be constructed. Because Jiangbei area belongs to different administrative entirety in the past, its administrative division is interlaced with each other. There are three demonstration zones, two parks and industrial parks which are centralized under the jurisdiction and developed regional classes, and each functional module is relative. It's a mess. At first, this paper lists the problems and opportunities in the establishment of the administrative system of Jiangbei New Area. Secondly, it finds the problems that need to be improved in the core areas concerned by Jiangbei New Area, and shows its own ideas and proposals. Finally, it needs to unite the actual development situation of the New Area and draw effective experience in the establishment and successful reform of other new zones. After many explorations and consulting a large amount of data, the author finds that Jiangbei New Area can try to construct an administrative management system of "mosaic mode": nest some new main management systems and administrative structures that existed before the new area, such as the management of the management committee, and then let the interaction between the administrative area and the functional area, reconstruct and manage the main body of the system. Different administrative relations, to establish a new management system.