Abstract: The ecological protection red line is an important content of territorial spatial planning and a policy handle for the construction of ecological civilization. Under China's five-level administrative system, the most basic-level township government is not only the main body responsible for economic and social development, but also the specific delineator and implementer of the ecological protection red line, and it is bound to directly face the conflict between development and protection. The delineation of the ecological protection red line is not a purely technical issue, but a consultation process of multiple stakeholders. The delineation of the ecological protection red line at the town level should be based on the needs of the township government's functions and management, and the ecological protection red line should be flexibly adjusted under the premise of implementing the indicators of the upper-level ecological protection red line area, that is, under the premise of strictly protecting the core area, flexible delimiting the general the scope of the control area. Therefore, the paper analyzes the principle of the ecological protection red line based on the management perspective and the theory of the ecological red line. In order to provide a reference for the development of the relevant work.