The global ocean energy resource is abundant. The ocean energy is a kind of emerging renewable energy. Climate change is the focus for international society. For the independence and the safety of energy, many countries take renewable energy into consideration. The emerging ocean energy industry is an important choice for marine economy recovery. The ocean energy resource is rich in China. Fostering ocean energy industry in China is very important for implementation of Carbon Peak and Carbon Neutral strategy, diversifying the energy structure and developing marine economy. In the critical period of ocean energy industrialization in China, it’s necessary to summarize the status of ocean energy technology and industry and to analyze the developing trend and application scenarios.