中国政府赋权澳门特别行政区政府管理的85 km²海域，为澳门经济适度多元发展提供了良好的支撑条件。从澳门拓展发展空间、提供资源、支撑产业、促进合作等方面，论述了海洋对澳门经济适度多元发展的重要性；分析了澳门相关产业具有的发展基础、中央支持澳门发展海洋产业的政策优势、澳门自身的“自由经济体”和葡语国家“桥梁”优势等3个方面的基础和优势。在此基础上，提出了海洋促进澳门经济适度多元化发展的战略路径：对接国家发展战略和本地社会经济发展需求，做好澳门海域和产业发展2个规划；通过区域联动与粤港澳大湾区、南部海洋经济圈城市群、葡语系国家3个区域建立海洋合作平台；从高端集聚、创新驱动、基础设施、文化融合等4个方面促进经济发展。

The 85 km² of sea area that the Chinese central government has empowered the government of the Macao Special Administrative Region to manage provides a strong support for the moderately development of Macao's economy. This paper discusses the importance of the sea to Macao's moderately diversified economic development in terms of expanding development space, providing resources, supporting industries, and promoting cooperation. It also analyzes the development foundation of Macao's related industries, the policy advantages of the central government in supporting Macao's development of the marine industries, Macao's own "free economy", and the "bridge" advantages of Comunidade dos Países de Língua Portuguesa. Based on this, the paper puts forward a strategic path to promote the diversified development of Macao's economy through the sea:to connect with national development strategy and the local social and economic development needs, to make two plans for the development of Macao's sea area and industry; to establish the marine cooperation platform with three regions:Guangdong-Hong Kong-Macao Greater Bay Area, southern marine economic circle urban agglomeration, and Comunidade dos Países de Língua Portuguesa through regional linkage.