We synthesized a TiO2-based nanotubes/nanoparticles composite structural film (NPNT film) using monodispersed nanotubes by doctor blade technique. The monodispersed nanotubes were prepared by potentiostatic anodization of Ti foil with infsequent ultrasonic dispersing. For a comparison, TiO2 nanoparticle film (NP film) and nanotube film (NT film) were also prepared in the same way. The NPNT film obtained obvious improved fill factor (FF) and total energy conversion efficiency (η) compared to traditional NP film. Charge-transport mechanism in NPNT film are discussed: The introduced nanotube is used as "electron expressway" for high-speed electron transport, which decrease electron transport resistance and thus produce markedly enhanced FF and improved total energy conversion efficiency.