As the shipping industry is an energy consuming industry, the total amount of petroleum energy consumption is relatively large. It is of great significance for reducing energy consumption and protecting the atmospheric environment to carry out energy conservation and emission reduction in the shipbuilding industry. Starting from the two aspects of open source and savings, the shipbuilding industry should not only actively promote technological innovation, develop and utilize various energy-saving marine products, but also continuously strengthen the research and development of various new energy sources, so as to promote the application of clean energy in ships.