Abstract: TiO₂was added to NH₂-MIL-101（Fe）precursor,and TiO₂/NH₂-MIL-101（Fe）was prepared by solvothermal method.TiO₂/C、N-doped Fe₂O₃composites （TiO₂/C、N-Fe₂O₃） were further obtained by high-temperature heat treatment.The crystal structure,morphology,composition and spectral characteristics of the obtained samples were characterized by X-ray diffraction（XRD）,scanning electron microscopy （SEM）,photoelectron spectroscopy （XPS）,UV-Vis diffuse reflection （UV-vis DRS） and fluorescence spectroscopy（PL）.The photocatalytic activity of Rhodamine B（RhB）was evaluated by degradation of RhB solution under simulated sunlight irradiation.The results show that the band gap width of TiO₂doped with C and N in Fe₂O₃decreases after TiO₂mixed with C and N doped with Fe₂O₃.After 2.5 h of simulated sunlight irradiation,the removal rate of 10 mg/L RhB reaches 95%under the photocatalytic action of 0.1 g/LTiO₂/C、N-Fe₂O₃composite.The rate is 0.0192 min^-1,and the effect is significantly higher than that of TiO₂and C,N-Fe₂O₃.The composite material has good stability and can be used repeatedly.The band gap is shortened mainly through the composite of porous C and N-doped Fe₂O₃and TiO₂derived from MOFs,and the separation of holes and electrons is strengthened,thus the visible light catalytic activity is improved.