Abstract: The TiO₂/river sediment (RS) was used as the raw materials to synthesize the visible-light catalyst by sol-gel method, in which the RS served as carrier and tetraisopropyl titanate (TTIP) functioned as precursors. The catalytic activity, recyclability and stability of the TiO₂/RS composite catalyst under visible light were investigated in depth. The crystal form, morphology, surface morphology and pore structure of TiO₂/RS composites were characterized by XRD, SEM, XPS and BET. By catalyst characterization, it is found that the porous structure of the TiO₂/RS composite is more obvious than the pure TiO₂, and its specific surface area can be increased to 98.43 m²/g. The catalytic ability of TiO₂/RS composite with the mass ratio of river sediment to TiO₂ of 0.5 is tested in the visible light assisted degradation systems by using methyl orange as the model pollutant. The results show that the degradation efficiency of methyl orange can reach 48.8% after 4 h and the dye removal can remain over 45% after 6 cycles of catalyst recycling.