[Objective] Exploring the optimization of low-carbon economy oriented land use structure to provide support for government land use planning and adjustment.[Methods] The best land use structure program was carried out by adopting gray multi-objective linear programming method to establish an objective function.[Results] In reference with land use planning scheme, we found that the medium carbon emission scheme in Fuzhou City is the best land use structure program. This medium carbon emission scheme was predicted that can decrease carbon emissions as much as 1.30×10⁷ t, increase economic benefits as high as 7.70×10¹¹ yuan and increase ecological benefits as high as 7.85×10¹⁰ yuan by 2020.[Conclusion] The low-carbon economy oriented land use structure would be in favour of the regional economic benefits and ecological environment improvement, which can reach the carbon reduction target.