Abstract: Rapid urbanization continues to intensify cultivated land fragmentation in the southeastern coastal areas of China. Implementing zoning governance is a crucial strategy to curb this issue. This study aims to identify regional cultivated land fragmentation patterns and their driving factors, and to explore a more applicable zoning approach for cultivated land remediation. Changtai District, Zhangzhou City, Fujian Province was selected as the study area. The levels of cultivated land fragmentation were measured using landscape pattern indices. Dominant driving factors were identified via the geographical detector model. Remediation zones were delineated through K-means clustering. A ‘diagnosis-attribution-zoning' framework was constructed based on the severity of fragmentation and key limiting factors. Key findings are as follows: 1) The southeastern hilly areas exhibited prominent fragmentation, characterized by high spatial dispersion, insufficient scale, and complex boundary shapes; 2) The urbanization rate, water resource availability, road density, and terrain relief were identified as dominant driving factors, with their interactive effects exerting a stronger influence; 3) The final zoning results clarified the key characteristics and issues of cultivated land fragmentation across different areas. Five optimal zones were classified for the remediation of cultivated land in Changtai District: priority zones, comprehensive zones, relocation zones, stable zones, and characteristic zones. This research provides valuable references for improving the design of land remediation zoning and supports efforts to curb cultivated land fragmentation in the southeastern coastal areas of China.