The article discusses the innovative approach of utilizing deep in-situ gasification of coal seams in China for hydrogen production. In-situ gasification involves creating high temperature and pressure conditions in underground coal seams to convert coal into combustible gas, enabling the extraction and transportation of coal resources. This method overcomes challenges faced during traditional coal-based hydrogen production, such as coal and gas outbursts. The in-situ gasification process is compared to surface gasification, highlighting differences in reaction characteristics and suitability for various coal seam depths. Deep in-situ gasification offers advantages such as improved thermal efficiency, higher methane content for hydrogen production, and the potential for storing carbon dioxide in supercritical state within the gasification cavity. Economic analyses of in-situ gasification-based processes, including hydrogen production and power generation, demonstrate competitive production costs and favorable comparisons with other energy routes. Researchers have evaluated the economic feasibility of in-situ gasification projects and assessed the capital costs of power plants utilizing this technology. The article emphasizes the importance of analyzing the energy conversion efficiency and utilization of deep in-situ gasification compared to existing fossil energy routes. While deep in-situ gasification shows promise for hydrogen production and carbon neutrality in industrial chains, its technical feasibility, efficiency, and economic viability require further investigation. The article suggests that deep in-situ gasification could be a scalable production route for converting traditional energy into hydrogen, but comprehensive analysis and improvements are essential before industrial application.