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.