Tungsten doped (W-doped) TiO2 mesoporous nanobeads,possessing high surface area and superior scattering effect,were used for photoanode preparation.The W-doping would induce a positive shift of the TiO2 conduction band,and enhance the driving force for electron injection and collection efficiencies.The electrochemical impedance spectra indicated a retarded charge recombination and increased electron diffusion length after W-doping.By fine-tuning the W-doping concentration to 0.25％,aqueous DSCs produced a significant improved the open circuit voltage of 712 mV and a short circuit current of 7.05 mA·cm-2,leading to an overall increased power conversion efficiency of 3.40％ at 1 000 W·m-2 simulated irradiation,which is roughly 25％ enhancement compared to that without W-doping photoanode.