China's pursuit of a sustainable economic development model encounters formidable environmental obstacles. In order to combat China's carbon emissions, this study investigates the possibility of using green hydrogen. While hydrogen gas is in short supply on Earth, the most plentiful element in the cosmos may be created from various sources, one of which is renewable energy. When burnt, fossil fuels release carbon dioxide into the atmosphere; green hydrogen, produced by renewable energies like sunlight and wind power, is a great alternative.The study highlights the green hydrogen production process, which involves generating clean energy, adding water to an electrolyser, splitting water molecules into hydrogen and oxygen, and storing compressed hydrogen gas. Natural gas, oil, and coal comprise the bulk of China's energy mix. Transitioning to green hydrogen could significantly reduce carbon emissions and enhance energy security.However, obstacles such as rising manufacturing prices, new infrastructure, and technological advances need fixing. By investing in hydrogen production technologies and infrastructure, China can lead the global transition towards sustainable energy, reduce carbon emissions, and achieve its sustainability goals. This case study underscores the importance of green hydrogen in China's future energy strategy.