NOVELTY - A conductive glass, multi-walled carbon nanotubes, sulfuric acid, hydrochloric acid, aniline, liquid ammonium sulfate, deionized water, alcohol, liquid polyvinylpyrrolidone, solid powder cobalt nitrate, solid crystal Triton (RTM: octylphenol ethoxylate surfactant), liquid acetone and liquid argon gas are prepared. The pre-processed multi-walled carbon nanotubes, ferric oxide, polyethylene pyrrolidone, nitric acid, cobalt, ethanol, aniline, deionized water and ammonium sulfate aqueous solution are added to three-neck flask and reacted, to obtain composite material.    USE - Preparation of electrode composite material for dye-sensitized solar cell.    ADVANTAGE - The method efficiently provides electrode composite material without polluting the environment.    DETAILED DESCRIPTION - A conductive glass having solid surface roughness of 16-0.32 mu m, multi-walled carbon nanotubes, 98% of solid powder sulfuric acid, hydrochloric acid, aniline, 95% of liquid ammonium sulfate, 37.5% of solid crystal, deionized water, alcohol, liquid polyvinylpyrrolidone, solid powder cobalt nitrate, solid crystal Triton (RTM: octylphenol ethoxylate surfactant), liquid acetone and liquid argon gas are prepared. Sulfuric acid (60 ml) is added in a beaker and stirred to form mixed acid. The multi-walled carbon nanotubes (0.5 g) are added to the mixed acid for 5 minutes, ultrasonically dispersed for 60 minutes, centrifuged, separated, washed using deionized water, vacuum-dried at 60 degrees C for 240 minutes and pre-processed. The conductive glass is placed in beaker, and ultrasonic cleaner is added, cleaned and dried. An ice and water is prepared. The hydrochloric acid aqueous solution is mixed with 5 ml of deionized water and stirred for 5 minutes under presence of ice water mixture, in three-mouth flask. The pre-processed multi-walled carbon nanotubes, ferric oxide, polyethylene pyrrolidone, nitric acid, cobalt, ethanol, aniline, deionized water and ammonium sulfate aqueous solution are added to three-neck flask provided with argon gas valve, stirred and reacted for 120 minutes, to obtain reaction solution. The obtained reaction solution is removed, centrifuged at speed of 5000 r/minute, separated, washed and dried, to obtain green solid product of carbon nanotubes/iron-cobalt/polyaniline composite material. A dye-sensitized solar cell is prepared using the obtained carbon nanotubes/iron-cobalt/polyaniline composite material. The prepared dye-sensitized solar cell is subjected to detecting, testing, analyzing and characterizing processes, and stored in brown transparent glass container.