To develop the marine economy and build a strong marine country, we need to care about, understand and manage the ocean from the perspective of national strategy. In order to systematically understand China's marine resource economy and strategy under the background of marine ecological civilization construction, nine well-known experts from marine-related fields were invited to discuss marine ecological civilization construction, marine land space planning, marine ecological pasture construction, and coastal ecological restoration. They conducted exchanges and interviews in frontier research fields such as marine strategic emerging industries, marine science and technology development, deep-sea mineral resources development, marine geopolitics, and China's participation in global ocean governance. According to their interviews: (1) The construction of marine ecological civilization is an important part of the construction of a powerful marine country. In the construction of marine ecological civilization, we should clarify the goal of building a beautiful ocean, master the methods of marine ecosystems, adhere to the major strategy of coordinating land and sea, and build an institutional system for marine ecological civilization. (2) National marine space planning should integrate existing sea-related plans, rationally develop, utilize and protect marine resources, innovate planning technologies and planning governance concepts, and strengthen marine space control indicators, marine space development capabilities, and local characteristic mechanisms for marine space governance, etc. (3) The construction of marine ranches should focus on the industrial chain and promote the construction of "all-for-one" marine ranches; strengthen the original drive, build an "all-for-all" marine ranch technology system; advocate integrated development and cultivate new "all-for-one" marine ranches. (4) Coastal ecological restoration based on "natural restoration" emphasizes the use of technologies to optimize the spatial layout and resource management of land-ocean staggered areas, fully consider the process and mechanism of natural restoration of coastal ecosystems, and improve the efficiency of ecological restoration. (5) The development of marine strategic emerging industries should grasp the general trend of the digital economy, focus on the development of intelligent manufacturing, accelerate the upgrading of the industrial structure, adhere to green and low-carbon development, and actively connect with regional strategies. (6) The key tasks for the future development of marine science and technology are to focus on the new strategic fields of deep sea and polar regions, improve the real-time fine observation and forecasting capabilities of key sea areas, focus on the intensive use of marine resources and energy, and strengthen the research and development of key core technologies of marine engineering equipment. (7) In the development of deep-sea mineral resources, it is necessary to strengthen international cooperation, carry out multidisciplinary investigation, long-term monitoring, enhance the research and development level of deep-sea development technology, evaluate the environmental impact of deep-sea mining, reduce the disturbance of the deep-sea development process to the marine environment, and realize deep-sea mining and deep-sea environmental protection coordinated development. (8) China should implement a spatially differentiated and targeted marine geostrategy to serve the unification of the motherland, the maintenance of marine rights and interests and the utilization of marine resources, and the safety of marine transportation and ecological environment, so as to ultimately serve the construction of a community with a shared future for the ocean. (9) We should implement the "going out" strategy of China's marine spatial planning technology, actively promote the strategy of building a "node network system" in China's overseas parks, and implement the talent training and training strategy for the needs of the Belt and Road Initiative, in order to provide necessary space fulcrum and technical support for global marine governance.