A novel low temperature method was used to prepare the mesoporous carbon(MC)counter electrode(CE)on indium-doped tin oxide coated polyethylene naphthalate(ITO-PEN)for flexible dye-sensitized solar cells(DSSCs).The obtained flexible MC CEs with carbon loading of 280 μg cm-2 were characterized by SEM,XRD and electrochemical impedance.The light-to-electricity conversion efficiency of the DSSC fabricated with the prepared flexible MC CE was 86% of that of DSSC based on the decomposited Pt CE.