Abstract: To evaluate the geological condition of carbon dioxide storage and target area selection in the Beibu Gulf Basin, based on the available evaluation technology for CO₂ storage and oil and gas recovery utilization, an evaluation index system was created at different levels for the basin, for which geological storage potential, storage safety, storage economy, and environmental indicators were considered. The fuzzy comprehensive evaluation method was applied to form a quantitative standard for evaluating the suitability of CO₂ storage in the Beibu Gulf Basin. In addition, the fault development and reservoir-cap combination in the Beibu Gulf Basin were characterized, from which more than 50 oilfields and oil-bearing structures were selected preliminarily and 6 of them including Weizhou A oil field meet the conditions of CO₂ sequestration. Meanwhile, according to the calculation of the index quantification system, the comprehensive evaluation values of these candidates were 5.52-7.30, indicating moderate level in CO₂ storage suitability, of which the Wushi D oil-bearing structure scored the best.