Biochar has shown significant potential in remediating uranium-contaminated soils through mechanisms such as surface complexation, reduction, ion exchange, and physical adsorption. This review highlights the effectiveness of biochar in reducing uranium bioavailability and shoot accumulation in plants, with a mean reduction of 58.9% and 39.7%, respectively. Modified biochar, enhanced through surface modification, exhibits greater efficiency in uranium immobilization. Biochar not only reduces uranium mobility but also improves soil quality by enhancing pH, organic matter, and microbial activity. The application of biochar mitigates uranium toxicity in plants by reducing oxidative stress and promoting plant growth. The review emphasizes the importance of understanding the interactions between biochar and uranium, including the role of surface functional groups, microbial reduction, and ion exchange. While biochar is effective in uranium immobilization, its efficacy depends on factors such as feedstock, pyrolysis temperature, and soil conditions. The study also highlights the need for further research on the long-term effects of biochar on soil-plant systems and the potential for uranium accumulation in biochar-amended soils. Overall, biochar offers a promising solution for the remediation of uranium-contaminated soils through multiple mechanisms, contributing to sustainable environmental management and agricultural practices.Biochar has shown significant potential in remediating uranium-contaminated soils through mechanisms such as surface complexation, reduction, ion exchange, and physical adsorption. This review highlights the effectiveness of biochar in reducing uranium bioavailability and shoot accumulation in plants, with a mean reduction of 58.9% and 39.7%, respectively. Modified biochar, enhanced through surface modification, exhibits greater efficiency in uranium immobilization. Biochar not only reduces uranium mobility but also improves soil quality by enhancing pH, organic matter, and microbial activity. The application of biochar mitigates uranium toxicity in plants by reducing oxidative stress and promoting plant growth. The review emphasizes the importance of understanding the interactions between biochar and uranium, including the role of surface functional groups, microbial reduction, and ion exchange. While biochar is effective in uranium immobilization, its efficacy depends on factors such as feedstock, pyrolysis temperature, and soil conditions. The study also highlights the need for further research on the long-term effects of biochar on soil-plant systems and the potential for uranium accumulation in biochar-amended soils. Overall, biochar offers a promising solution for the remediation of uranium-contaminated soils through multiple mechanisms, contributing to sustainable environmental management and agricultural practices.