<p>This book provides a comprehensive examination of the developmental history and patterns of the hydrogen energy industry, while also exploring the underlying evolutionary logic, current positioning, and future trends of China's hydrogen energy sector. Based on this analysis, a model is developed to systematically forecast China's total hydrogen energy consumption, the structure of sectoral consumption, and the prospective evolution of carbon emission reductions attributable to the application of hydrogen energy. Furthermore, this book establishes a forecasting data system for medium- and long-term supply-demand dynamics of hydrogen energy in China, offering a systematic outlook on the consumption prospects of hydrogen energy across end-use sectors. The primary objective of this book is to evaluate the regularities of evolution and the internal logic governing the development of the hydrogen energy industry, as well as to construct a medium- and long-term forecasting system for hydrogen energy development.</p><p><br>Parts of the translation was done with the help of artificial intelligence. A subsequent human revision was done primarily in terms of content.</br></p>