In the new era, with the acceleration of the construction of Hainan Free Trade Island, the contradiction between the maintenance of ecological security and the development of urban and rural construction in Sanya has become increasingly prominent. In order to explore the spatial pattern and sustainable development trend of land use in Sanya City in the future, this study uses the GeoSOS-FLUS model as the main model, ENVI remote sensing image interpretation and ArcGIS spatial analysis as the supplement, and Fragastas landscape pattern index analysis as the supplement to realize the spatial layout simulation and diversity evaluation of land use in Sanya City in the future. The land use circulation trend, fragmentation trend and diversity trend in Sanya from 2017 to 2025 were analyzed, and the regulation and guidance strategies of land use were discussed from three aspects of land space planning control, land landscape pattern control and land use circulation control. The results show that under the strict land use conversion restrictions, the degree of fragmentation of the land system in Sanya is generally decreased, and it maintains a relatively stable integrity, diversity and uniformity of the land system.
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