Using hydrochars as template, TiO2 photocatalysts were prepared by the sol-gel method. The samples were characterized with X-ray diffraction (XRD), Fourier infrared spectrum (FT-IR), scanning electron microscope (SEM) and BET specific surface area measurement. The photocatalytic activity was investigated by degradation of methyl orange (MO) as target pollutant in the solution. The results showed that HTC-TiO2 remained anatase type at high calcination temperature due to the higher thermal stability than TiO2. The TiO2 particles were almost uniformly dispersed on the surface of HTC. HTC-TiO2 had smaller crystal sizes, bigger specific surface area and the flake structure, which had the same structure character as the hydrochars micro-structure and was beneficial to improve the photocatalytic activity. The degradation rate of MO under 550 W iodine-tungsten lamp illumination for 2 hours was 40.6% in presence of HTC-TiO2 calcined at 450ºC, which increased by 1.5 times more than those in presence of TiO2 (16.2%).