Abstract: The removal and conversion of tar in coke oven raw gas through catalytic reforming is of great significance for improving the energy and material utilization efficiency of COG. This paper takes the tar in coke oven gas as the research object and investigates the effects of catalytic reforming temperature, oxygen addition, steam-to-carbon ratio, and catalysts on the catalytic reforming of tar in coke oven raw gas. The mechanism of catalytic reforming is also analyzed. The results show that moderately increasing the catalytic reforming temperature is conducive to the catalytic cracking of tar to generate small-molecule gases such as H₂ and CH₄. The addition of appropriate amounts of oxygen and steam can initiate partial oxidation reactions with tar vapor, residual carbon from tar cracking, and small-molecule gases, which are important for adjusting the composition of coke oven raw gas and increasing its calorific value. The addition of CeO₂ as a promoter can enhance the activity of the catalyst and promote the catalytic cracking and reforming of tar. Under the conditions of a catalytic reforming temperature of 850 ℃, an oxygen-to-fuel ratio of 0.06, and a steam-to-carbon ratio of 3.6, using a nickel-based catalyst with 5% CeO₂ as a promoter, the cracking rate of tar in COG can reach 48.42%. At this point, the volume fractions of H₂, CH₄, CO, and C_nH_m in the gas product are 37.39%, 13.05%, 11.38%, and 2.02%.