Tungsten-oxide thin films have been prepared by doped silver and titania in the manner of layers or symbiosis, respectively. Morphology and static optical properties of the composite films have been investigated by means of scanning electron microscope (SEM) and atomic force microscope (AFM), ultraviolet-visible spectrophotometer (UV757CRT) respectively. Chronoamperometry (CHI604C) is carried out and spectral measurements are performed in situ when films are tested. Results show that the films are good in adhesion to substrate. They have relatively compact structure and high coloration efficiency, improved by an average of 52.85% compared with the original tungsten-oxide thin films, and the variation of transmittance (bleached/colored) can reach 87.64% (λ=600 nm, colored time 20 s).