Abstract: Under the background of 'carbon peak, carbon neutrality', the port energy conservation and emission reduction are imminent. Due to the complex structure of a green low-carbon port and the close interaction and coupling between the heterogeneous energy sources and between the energy system and the logistics system, the low-carbon technology of port integrated energy system has become a research hotspot. This paper analyzes the current status of port low-carbon operation, including the port electricity replacement, the renewable energy generation technology, the clean fuel application in the port and the port low-carbon platform development. In view of the close coupling trend of the energy and logistics in the port integrated energy system, the operation characteristics of different port logistics modes are summarized, the research results of the energy-logistics coupling mechanism are sorted out, and the modeling method of quantification of the logistics transportation energy is discussed emphatically. The existing flexibility resources of the ports are summarized, and the related literatures on the port energy management are reviewed. Finally, this paper analyzes and prospects the future development of the green port comprehensive energy system, providing a reference for the research on the low-carbon development of ports under the 'double carbon' targets.