[Objective] The productional-living-ecological space conflict was analyzed in order to provide a reference for the management and optimization of land use spatial conflict in small and medium-sized urban agglomerations.[Methods] Land use information was extracted from remote sensing image data for the Xiamen-Zhangzhou-Quanzhou urban agglomeration in 2000, 2010, and 2020. A spatial conflict evaluation index system was constructed to quantify land use conflict from the perspective of landscape ecology, and temporal and spatial evolution characteristics were determined.[Results] ① Ecological production land dominated the Xiamen-Zhangzhou-Quanzhou urban agglomeration, and the area of living and production land increased over time. The increase rate was fastest from 2000 to 2020; ② In general, the Xiamen-Zhangzhou-Quanzhou urban agglomeration exhibited a medium level of spatial conflict during the past 20 years, and spatial conflict had gradually intensified over time. A strong conflict space was evident in the central urban areas and areas surrounding the three major cities; ③ The overall Moran's I index result for land use spatial conflict was highly significant, and the spatial conflict agglomeration effect was enhanced, while the local characteristics of spatial conflict showed obvious high-high agglomeration and low-low spatial agglomeration characteristics. Low-high agglomeration and high-low agglomeration were not obvious, but the internal spatial relationship was basically stable.[Conclusion] The intensity of spatial conflicts has intensified over time. Therefore, people should strengthen regional control and early warning mechanisms of conflict risk.