Sulfate radical advanced oxidation processes (SR-AOPs) are promising in-situ chemical oxidation (ISCO) technologies for soil remediation with organic pollutants. However, few studies have explored the polycyclic aromatic hydrocarbons (PAHs) remediation by using SR-AOPs. In this study, soil samples were collected from the steel mills in Nanjing, and the different ratios of Na₂S₂O₈ and Fe²⁺ and degradation time were investigated to degradation efficiencies of 16 PAHs in soil. The results showed that the ratios of Na₂S₂O₈ and Fe²⁺ could significantly impact on the degradation efficiencies, degradation efficiencies reached the optimum efficiency 29.32% when the Na₂S₂O₈ : Fe²⁺ = 10:1 during 24 h reaction. Besides, the ring of PAHs plays a key role in degradation efficiency by using SR-AOPs technologies, and the tetracyclic PAHs had the highest degradation rate of 37.32% than others. Furthermore, degradation efficiency was increased with increasing reaction time, and the highest degradation efficiency under 24 h reaction was found. These factors should be considered when using SR-AOPs in PAHs remediation in soil.