The hydrogen industry has unique industry coupling attributes, making it an important cornerstone of energy transformation in the process of global carbon neutrality, and an important technical path for reducing emissions in industries with high carbon emissions and difficult to decarbonize such as industry and transportation. In the context of addressing global climate change, the world's major economies have released mid- and long-term development strategies for the hydrogen industry. This paper focuses on the comparative analysis of the mid- and long-term development strategies of the hydrogen industry recently released by the United States, the European Union, Germany, Japan and South Korea. The relevant conclusions include: improving hydrogen production capacity has become the main line of hydrogen development in various countries, but there are differences in hydrogen production paths; the development path of hydrogen industry in various countries has clear stage characteristics, and each country has its own development direction; technological innovation covers the entire hydrogen industry chain; cross-field cooperation promotes the implementation of hydrogen strategy; hydrogen international trade cooperation accelerates development. On this basis, combined with the development status of China's hydrogen industry, five suggestions are put forward for the development of China's hydrogen industry: deepening the implementation of China's hydrogen technology strategy; systematically deploying technology research and promotion and application in the entire hydrogen industry chain; continuing to expand hydrogen industry development vision; systematically promoting the hydrogen system integration strategy; paying close attention to the progress of hydrogen international financial trade.