海陆关联工程是指在建设和运行中同时涉及陆域和海域并发挥显著作用或产生重大影响的工程项目，主要包括港口、跨海桥梁、海底隧道、填海工程等。近年来，我国海陆关联工程的建设快速发展，工程技术的总体水平得到了提高，在沿海经济发展中发挥了显著的作用，但也存在发展不平衡、协调性较差、环境和安全管理相对薄弱等问题。未来我国应逐步推进从沿海到深海大洋、从示范试点到全面铺开、从单一工程到复合工程的海陆关联工程体系的建设，重点在沿海产业涉海工程布局、海陆物流联运工程、海岛开发与保护工程、沿海重大防灾减灾工程等领域强化海陆关联工程的建设。

Land-sea integration engineering refers to the engineering projects involving overlapping elements of land and sea and play significant roles in the development and operation of these domains, including ports, bridges and tunnels, and land reclamation and others. In recent years, land-sea integration engineering projects have gained momentum and impetus in China and the level of technology utilized in these projects has seen an improvement compared with previous efforts. This study shows that although the land-sea integration engineering has played a significant role in the development of China's coastal regions' economies, but such works are challenged by unbalanced development, poor coordination in planning and execution, weak governance of the environment and safety operations issues. This paper suggests that China should gradually strengthen the development of land-sea integration engineering systems, which covers a broad area from the coasts to the deep seas, using pilot programs that are upgraded progressively to full-scale programs due to their success. Futhermore, China should focus on the land-sea integration engineering in the fields of coastal marine engineering, land-sea communication, marine transportation engineering, island development and protection engineering and coastal disaster prevention and mitigation engineering.