In recent years, the coastal ports of the Yangtze River Delta have rapidly developed with the progress of science and technology, which has caused some problems on account of the rapid development of ports. On the one hand, there is fierce competition within the same port group; on the other hand, many ports waste resources. This study selected the three-stage data envelopment analysis (DEA) and Malmquist index models to calculate and analyze the efficiency value of the coastal port group in the Yangtze River Delta; the study was conducted to make a reference for the formulation of the optimization strategy from the perspectives of static and dynamic efficiency. The results show that from the perspective of static efficiency, the comprehensive efficiency of the Yangtze River Delta coastal port cluster is at the upper-middle level. However, it has not yet reached the frontier surface, and the low scale efficiency is why the port group has not been called the frontier surface. From the perspective of dynamic efficiency, the total factor productivity of the Yangtze River Delta port group has increased by 3.6% in the past five years. Technological progress and comprehensive technical efficiency have improved. The optimization strategy was formulated according to the problems faced by the Yangtze River Delta port group and the reasons for not reaching the frontier.

China's cruise industry has developed rapidly in the past ten years, and China's cruise port construction has flourished. A total of 20 cities along the coast of mainland China have built or planned to build cruise terminals. According to WTO estimates, China will gradually become the world's largest source country of cruise passengers and cruise travel consumers in the future. Due to different national conditions, the business model and development prospects of Chinese cruise ports are different from those of foreign ports. It requires finding the pioneers of domestic cruise ports to take the lead, providing advice on the development and operation of cruise ports. Dalian Cruise Port is actively formulating its cruise industry development plan, expanding the cruise port, and improving the supporting facilities in the cruise port area. Based on the characteristics of the operation of the Dalian cruise port, we use the gray model to make a vague prediction of the future development of the cruise port. It reflects the advanced operation mode of Dalian Port. This research systematically analyzed cruise port operations and maritime cruise transportation. Because the cruise port's business model and prospects are essential to the cruise port industry, China's cruise ports must learn more advanced operating models.

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