The port coastline is an essential strategic resource of the country. Strengthening the effective protection and reasonable utilization of the port coastline is of strategic importance to the sustainable and healthy development of transportation and even the national economy. This paper analyzes the main characteristics of the reserve，distribution，development and construction of the port coastline resources in China. It highlights the main problems in developing the port coastline，including unreasonable utilization，lack of measurement standard，and inadequate statistical system，etc. Then，it proposes relevant strategies to further promote the efficient utilization of the port coastline in China，such as improving shoreline measurement standards，establishing a normalized supervision mechanism，and optimizing the shoreline statistical system. The appropriate conclusions can provide a reference for the transport sector to formulate policy measures and comprehensive resource utilization management.