This article reviewed the concept, development history, technical characteristics, and application directions of the digital twin, concluding the port’s characteristics as an international trade hub window, and the construction decision-making problems faced by the government in management, and proposed the application of digital twins in the field of port construction and operation, which should focus on the needs of port digitization and integrated management, especially set up the research on infrastructure construction, data integration, information model construction, application service platform expansion, etc., then established a spatiotemporal correlation index system for infrastructure, simulate port construction and operation processes, to realize port’ infrastructure elements virtualized, real-time monitoring, and management collaborated. The full scene visualizes the port development process and ability to ensure the adaptation, thereby promoting the cost reduction and efficiency improvement of the entire logistics chain and value chain.

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With the introduction of emission peak and carbon neutrality strategy, green shipping has already become an urgent need for the development of water transportation industry. Using liquified natural gas (LNG)-powered ships is an effective way to deal with carbon emission, and more and more shipping companies are willing to choose it as the main ship type in the future. As the open cooperation portal to the Asia-Pacific region, the Bohai Rim region occupies an important position in China national shipping system. Focusing on the bunkering needs of LNG-powered ships in the future, ports in the Bohai Rim region should add LNG bunkering stations with reasonable layout and complete facilities. This paper constructs a comprehensive evaluation system for the site selection of LNG bunkering stations in coastal ports from five aspects: natural factors, infrastructure factors, economic factors, safety factors and policy factors, and conducts the evaluation on the alternative port areas. After comprehensive analysis, the Caofeidian Port Area of Tangshan Port is recommended as the location of LNG bunkering station.