In dye-sensitized solar cell (DSSC) system, the real contact area between the dye and the electrolyte is very important because of fast readiness for separating electrons and holes by the light energy being original form of dye by redox reaction between dye and electrolyte. In order to enhance the photo-electric conversion efficiency in dye sensitive solar cells (DSSCs), the photoelectrode with nano-channels was prepared. The photoelectrode with nano-channel is able to enlarge active area for charge transfer among TiO₂/dye/electrolyte. For preparing nano-channels in the photoelectrode, the polystyrene (PS) beads prepared by solution polymerization were added when preparing TiO₂ pastes for photo-electrode film. Added nano PS beads in photoelectrode were decomposed and formed the nano-channels when heat-treating at 500 ^oC for sintering between TiO₂ particles. The cell efficiencies of cells without and with nano-channels by PS beads (10%) are 5.19 and 7.47%, respectively. The cell photovoltaic performance is dramatically improved because of effective delivery of electron and hole to electrodes at the enlarged boundaries among dye/TiO₂/electrolyte due to the increase of the impregnation amount of dye and electrolyte via the nano-channels formed by the decomposition of nano PS beads.