Abstract: The proportion of chemical oxidation in the remediation of organically contaminated sites has increased rapidly in China, but the potential corrosion risk of residual oxidants and by-products to land reuse has attracted the attention of researchers. Through the actual investigation and literature research of 137 sites in China, four main characteristics of chemical oxidation remediation technology can be drawn: applications mainly in small and medium-sized contaminated site, soil and water co-remediation and complex remediation media, excessive persulfate application and various by-products, short repair cycle and overload of chemical oxidant. Then, for the most commonly used persulfate oxidation remediation technology, three main potential corrosion mechanisms were analyzed through literature review and field case studies. The residual oxidant corrosion, by-product salt corrosion and microbial erosion can occur during the redevelopment of the remediated sites. The qualitative and quantitative monitoring of corrosion risk was also investigated. Finally, a conceptual model that divides the potential post-remediation corrosion process into 3 different phases was proposed for chemical oxidation by persulfate based on the chemical oxidation process and the key factors in the short-term, mid-term and long-term, including pH, ORP, salt and microbial environmental conditions. This research can provide scientific references for the field application and effect verification of chemical oxidation remediation technology.