TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preparation: Manufacturing carbon slurry for counter electrode of dye sensitized solar cell involves: (a) preparing liquid mixture, weighing materials according to formulate of 0.5-40 wt.% viscosity regulator and 20-99.5 wt.% solvent; (b) dissolving weighed viscosity regulator in the solvent, and mechanically stirring and mixing evenly, where the mechanical stirring time is 5 minutes to 4 hours, the temperature is maintain at 20-80 degrees C, and forming transparent liquid mixture; and (c) evenly mixing the liquid mixture in (b) and the solid carbon powder, mixing 5-85 wt.% solid carbon powder and 15-95 wt.% liquid mixture to manufacture carbon slurry for counter electrode of dye sensitized solar cell; where the grain diameter of the solid carbon powder is less than 1 mm, and the specific area is 10-2000m2/g. Preferred Process: Preparing carbon slurry also comprises adding surfactant (0.5-20 wt.%),adhesives (0.5-20 wt.%), and pore-forming material (0.5-20 wt.%) in the liquid mixture, where the surfactant is tritonX 100, tritonX 405, tritonX 114, tritonCF 10, tritonDF 20, triton 15-S-7, triton 15-S-9 or its mixture, the adhesives are tin dioxide powders, tin dioxide colloids, or its mixture, and the pore-forming material is cellulose or its salts or derivatives, polyether, or its mixture. Preferred Components: The solid carbon powder is hard carbon materials with different specific area or their mixture; or the solid carbon powder is mixture composed of the hard carbon materials and black carbon, where the hard carbon material is 70-100 wt.%, and the black carbon is 0.5-30 wt.%. The viscosity regulator is starch or its salts or derivatives, cellulose or its salts or derivatives, or polyether or its mixture, where the cellulose or its salts or derivatives is methyl cellulose, ethyl cellulose, cellulose acetate, sodium carboxymethyl cellulose, or their salts or derivatives or its mixture, and the polyether is polyethylene glycol, polyethylene glycol, polypropylene glycol, polyglycerol, copolymer of ethanediol, propylene glycol or its mixture, it has different molecular weight, and the polyether is also considered as the pore-forming material for manufacturing porous solid film. The solvent is water, alcohols, terpene compound, or its mixture, where the alcohol is carbinol, ethanol, normal propyl alcohol, isopropanol, n-butyl alcohol, isobutanol, sec-butyl alcohol, tert-butyl alcohol, normal amyl alcohol, amyl alcohol, n-hexyl alcohol, normal enathol heptanol, ethanediol, propylene glycol, glyceryl alcohol, phenylcarbinol, allylalcohol, or its mixture, the terpene compound is isoborneol, borneol, ketone-2, borneol-2, alkane-2, menthone, hexahydrothymol, terpilenol, or its mixture.