This paper implements the requirements of ecological civilization construction,scientifically utilize China’s territorial space resources,and explores the scientific protection and rational use of China’s scarce and precious port shoreline resources in port planning to better support the implementation of national and regional major strategies under the clear requirements of the state’s “comprehensive prohibition of reclamation except for major national projects”.Then,it systematically summarizes the spatial distribution pattern of China’s coastal ports,the status quo of utilization of port shoreline resources,and the connotation and application practice of the concept of “strategic blank space”,analyzes the temporal and spatial changes of China’s coastal ports reclamation,and the problems concerning “reclamation” in the current port planning.Combined with actual cases,this paper takes Beibu Gulf Port,an international hub port,as an example,proposes the application paradigm and implementation path of “strategic blank” in port planning to provide important reference for other port general planning and environmental impact assessment review,and provide effective support for the major strategic projects of port resource protection and reserve.