F-doped TiO2 have been prepared using tetrabutyl titanate，ammonia and hydrofluoric acid by solvoethermal method.The properties of the powders were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM)，N2 adsorption-desorption isotherms (BET) and Fourier transform infrared (FT-IR). The photodegradation of methylene blue (MB) solution was used to evaluate the photocatalytic activity of the catalyst under UV and visible light irradiation. The results showed that the TiO2 was in the pure anatase phase, the fluorine atoms were mainly distributed on the surface of TiO2, the photocatalytic activity was increased by adding hydrofluoric acid, it can increased the surface area， improved the crystallinity of the anatase phase and enhanced the formation of free OH radicals.