The article discusses the utilization of Underground Coal Gasification (UCG) as a method to extract hydrogen and other combustible gases from coal resources, offering a potential solution for decarbonization and reducing environmental impact. With concerns over carbon emissions from coal-based industries, the focus has shifted towards cleaner energy alternatives, including hydrogen. UCG involves adapting surface coal gasification techniques for underground use, enabling controlled extraction of gases like hydrogen, carbon monoxide, and methane. Research conducted at the Mikasa Unused Coal Energy Research Facility in Hokkaido, Japan, has shown promising results in controlling gasification zones, ensuring gas quality, and reducing production costs associated with hydrogen. Experiments have demonstrated the ability to manipulate injection pipes, recover stable gas, and regulate gas components effectively. Furthermore, studies have explored the benefits of injecting water into coal seams during UCG processes to enhance hydrogen production, improve gas composition, and prevent operational issues like pipe melting. Computational Fluid Dynamics (CFD) simulations have supported these findings, indicating that steam and water injection can optimize hydrogen yield and temperature control in UCG systems. The advancements in UCG technology offer a glimpse into a more sustainable and cost-effective approach to hydrogen production, potentially revolutionizing the energy industry. By harnessing hydrogen from coal resources with minimal environmental impact, countries can work towards achieving decarbonization goals and mitigating climate change effects.