TiO2/N-succinyl-chitosan composite was prepared by compositing TiO2 and N-succinyl-chitosan. The composite was characterized by transmission electron microscopy (TEM), fourier infrared spectrum (FTIR), ultraviolet-visible spectra (UV-Vis), X-ray diffraction (XRD), particle size and Zeta potential analysis. The results showed that stable composite was formed by interaction of the surface hydroxyl groups of TiO2 with hydroxyl, amide and carboxyl groups of N-succinyl-chitosan. TiO2 of the composite was anatase. The average particle size of the composite was 50 nm and Zeta potential was 39 mV. Ultraviolet-visible spectra revealed that light response range of the composite was widened to visible region and the light absorption capacity significantly enhanced, but its photocatalytic efficiency was lower than TiO2 under simulated sunlight.