Absrtact: Taking the construction of the supervision system for the planning implementation of the competent department of Territorial and spatial planning as the object, on the basis of the comprehensive analysis of the implementation of the whole life cycle management of the planning, this paper analyzes three types of supervision on the implementation of planning: Supervision on the approval of land space planning at the lower level, supervision on the use of land space projects and supervision on the actual use of land space. According to the principles of“Who organizes and prepares, who is responsible for the implementation” and“Who examines and approves, who supervises” the implementation and management of territorial and spatial planning, the paper puts forward the concrete contents and items of supervision over the implementation of the plans compiled by the government organizations at the same level and the implementation of the plans approved by the government at the same level. To further explore the supervisory process for the implementation of territorial and spatial planning, which consists of three stages: monitoring, assessment and decision-making, and explain its inherent logical relationship: according to the requirements and needs of decision-making to determine the implementation of various types of planning and evaluation of the type and content, according to the data types of different types of assessment, that is, indicators to determine the content and data requirements of planning and implementation of monitoring, and then provide a basis for the layout of various monitoring means and the use of monitoring methods.