The effect of electrodepositing polypyrrole (PPy) onto dye-coated TiO2 surface on the photocurrent-voltage (J-V) characteristics of dye-sensitized solar cells was studied. It is observed that both open-circuit voltage (V-oc) and short-circuit photocurrent (J(sc)) of PPy-anchored TiO2 (PPy/TiO2) solar cells increase, compared to those of a TiO2 cell. Furthermore, the stability of the J-V characteristics is enhanced with the modification. The combined effects of reduced back-electron-transfer to I-3(-) ions and negative shift of flatband potential explain the V-oc increase. Analyses of electrochromic measurements suggest that the J(sc) increase is related to the enrichment of conduction band electrons in the PPy/TiO2 electrode.