NOVELTY - A carbon nano pipe array photo-cathode material has a corrosion-proof metal plate as a substrate, and a carbon nano pipe array at the surface of the substrate. The carbon nano pipe array is vertical to the substrate, and has diameter of 10-30 nm and length of 1-3 mu m.    USE - Carbon nano pipe array photo-cathode material used for manufacturing dye sensitizing solar battery (claimed).    ADVANTAGE - The carbon nano pipe array photo-cathode material is economical and provides battery with reduced resistance.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (i) manufacture of carbon nano pipe array photo-cathode material, which involves using magnetron spluttering or plasma film deposition method to plate a layer of catalyst film on metal plate substrate, filling mixed gas of hydrogen and argon, or nitrogen, reducing substrate plated with catalyst at 500-700 degrees C, supplying ethylene gas to tube type reactor, cooling reactor to room temperature under argon atmosphere, obtaining carbon nano pipe array product, putting carbon nano pipe array product in 285 W ultraviolet ozone generator, exposing for 10-30 minutes, and obtaining carbon nano pipe array photo-cathode material; (ii) dye sensitizing solar battery, which comprises photo-anode, photo-cathode and electrolyte. The photo-anode is dye sensitizing nano crystal titanium dioxide film electrode. The photo-cathode is made of carbon nano pipe array photo-cathode material. The electrolyte is obtained by adding 0.6 mol/L of 1-butyl-3-methylimidazole iodate, 0.03 mol/L of iodine, 0.1 mol/L of guanidinium isothiocyanate and 0.5 mol/L of tertiary butyl pyridine to acetonitrile solvent and using as support electrolyte; and (iii) manufacture of dye sensitizing solar battery, which involves coating titanium dioxide slurry on a piece of tin dioxide transparent conductive glass (FTO) mixed with fluorine through a screen printing method, after sintering for 30 minutes under 450 degrees C, soaking in ethanol solution of ruthenium-base dye, adsorbing for 12 hours, obtaining photo-anode, adding Surlyn (RTM: random copolymer poly(ethylene-co-methacrylic acid) thermoplastic polymer film) to portion between the dye sensitizing titanium dioxide photo-anode and the carbon nano pipe array photo-cathode, heating at 90-110 degrees C for 20-30 seconds through a hot seal machine, and bonding two electrodes completely, and filling electrolyte solution to back hole of the photo-cathode, sealing electrolyte filling hole.