Abstract: Landscape architecture is an important carrier of green development. Under the background of national territory spatial planning reform, it is urgent to clarify its tasks and roles. By reviewing the history of national territory spatial planning, this paper sums up the key points of aligning landscape architecture planning with the national territory spatial planning system, and clarifies its current positioning and functions. It proposes that landscape architecture planning should be effectively incorporated into the national territory spatial planning system. The content should include not only nature reserve planning and national park planning, but also give full play to the role of landscape governance for overall planning. It is essential to take full part in national territory spatial planning in three layers, which are the development and protection of the national territory spatial pattern, the overall adjustment of urban and rural areas, and the promotion and improvement of urban and rural functional control areas, thus build a landscape architecture planning system with Chinese characteristics. The landscape architecture planning conforms to the basic value orientation of national governance. It is of great significance to adhere to ecological civilization, promote harmonious coexistence between man and nature, and build a beautiful living environment.