Although titanium dioxide (TiO2) photocatalyst is a promising substance for photodegradation of pollutants in water and air, its photocatalytic performance is efficient only under ultraviolet (UV) light. In order to utilize a wider range of incident light such as solar light, development of the photocatalysts sensitive to the visible lights is one of the most important strategies. In this research nitrogen-doped Tio2 photocatalysts were prepared by mechanochemical method. The samples were synthesized by using a high-speed ball milling of P25 TiO2 with different nitrogen sources such as ammonic solution, hexamine and urea. Phase composition were investigated using an x-ray diffractometer (XRD) while absorption edge and band gab of the products were determined from the onset of diffused reflectance spectrum measured using an UV-Visible spectrometer. The photocatalytic activity of the N-doped TiO2 was evaluated through the removed of methylene blue under UV and visible light.