Abstract: One-dimensional(1D) nanowire material (especially nonmetal doped 1D nanowires) synthesized by a facile way is of great significance and greatly desired as it has higher charge carrier mobility and lower carrier recombination rate. C, N-codoped TiO2 nanowires were synthesized using titanium sulfate as a precursor and isopropanol as a protective capping agent by a hydrothermal route. The obtained doped nanowires were characterized by XRD, SEM, HRTEM, SAED, XPS, BET and UV-vis absorption spectrum. The as-synthesized C, N-codoped TiO2 nanowires calcined at 500 oC have TiO2 (B) and anatase phase and then are completely transformed to anatase phase at the calcination of 600 oC. Photocatalytic activity measurement shows that the C, N-codoped TiO2 nanowires calcined at 600 oC reveals the best photocatalytic performance for the degradation of atrazine under visible light irradiation compared to C, N-codoped TiO2 nanoparticles and C-doped TiO2 nanowires, which was attributed to i) the synergistic effect of C and N doping in narrowing the band gap, separating electron-hole pairs and increasing the photoinduced electrons, and (ii) extending the anatase-to-rutile transformation temperature above 600 oC.