TiO2 nanotubes were synthesized on FTO substrate by liquid phase deposition method. Subsequently Ag particles were photodeposited on the surface of TiO2 nanotubes. Moreover the obtained array was investigated by SEM, EDS and XRD. As a result, TiO2 nanotubes exhite anatase phase, and there are obvious Ag particles attached on the surface of the tube wall. Under UV irradiation, the ultraviolet detector based on Ag/TiO2 nanotubes shown the excellent visible-blind characteristic. After a deposition of Ag, the ultraviolet detector based on Ag/TiO2 nanotubes exhibited a high on/off ratio of 2 251, together with the photocurrent density of 91μA/cm2.