Abstract: The “A map” of the national territorial space planning is conducive to unifying space land use control, strengthening planning and implementation supervision, promoting data sharing between government departments and information interaction between government and society. Governments at all levels are vigorously carrying out the construction of “A map” of the national territorial space planning. At present, there are many types of planning data. However, there are problems such as unplanned planning data systems, lack of correlation between data, difficulty in integration, and difficulty in updating linkages. Therefore, the paper first proposes the planning entity. Taking the controlled detailed planning and public utilities special planning in Nanjing as the research object, the research on coding system, attributes design of the planning entity and relationship construction is carried out, and it is verified by examples. The research shows that the planning data system based on the planning entity is more scientific, which can effectively realize the association and dynamic update between data, and provides a new construction idea for the construction of “A map” of the national territorial space planning.

Key words: “A map” of the national territorial space planning, planning entity, the coding system, planning entity association