Under the background of the national“dual carbon”strategic goal，the steel industry，as a key area of high carbon emissions，has an urgent need to accelerate the green and low-carbon transformation. Relying on the advantages of abundant coke oven gas resources，China’s direct reduction technology of hydrogen-based shaft furnace has optimized and improved the mature application of Midrex method and HYL/Energion method in foreign countries，taking hydrogen-rich or pure hydrogen gas as the reducing agent to produce solid sponge iron，which has achieved phased results in many projects. Therefore，the process characteristics，carbon reduction mechanism and economic value of direct reduction technology for hydrogen-based shaft furnace are focused on. The results show that the hydrogen-based shaft furnace production system consists of multiple parts，and the core is the hydrogen-based shaft furnace itself，which is mainly based on H₂ reduction and supplemented by CO reduction，with stable DRI composition produced and high chemical reaction activity. The key link of carbon reduction in the process: with the help of furnace conditions，CH₄-CO₂ reforming avoids the high energy consumption caused by external reforming，and can realize energy recycling; The MDEA chemical adsorption method can remove CO₂ efficiently; In the CO₂ utilization process，food-grade CO₂ products with a purity of 99. 9% can be prepared through a multi-stage refining process，creating significant economic benefits. The hydrogen-based shaft furnace direct reduction zero reforming process based on coke oven gas combined with CCUS technology can reduce carbon emissions by more than 60% compared with traditional blast furnace ironmaking，greatly reducing the emission of pollutants such as dust，SO₂ and NO_x.