Abstract: With the continuous increase in human energy demand, a large amount of CO₂ is emitted into the atmosphere, leading to serious disruption of the Earth’s climate and ecosystem balance. Reducing CO₂ and coal char to CO is essential for the large-scale utilization of CO₂ and is currently one of the most valuable pathways for CO₂ chemical utilization. Using wheat straw semi-char as a catalyst, a fixed bed experimental system was established to investigate the catalytic characteristics of wheat straw semi-char in the carbon reduction reaction of Inner Mongolia coal char. The effects of temperature, atmosphere composition, and reaction residence time on CO₂ conversion rate and selectivity were investigated. At 1300 ℃ and 10% CO₂ concentration, the conversion rate and CO content of wheat straw semi char catalyzed coal char carbon reduction were increased to 91.94% and 94.95%, respectively.