NOVELTY - A conductive paste preparing method involves preparing glass powder weighing raw material comprising potassium oxide, arsenic trioxide, cobalt oxide, tin oxide, vanadium pentaoxide, boron trioxide, and zirconium oxide, uniformly mixing to obtain molten material followed by cold water quenching, and sieving. C5 petroleum resin organic carrier is prepared. Material A and B are prepared. The material A, material B, silane coupling agent, organic silicon flatting agent, trioctyl trimellitate and thermoplastic acrylic resin are uniformly mixed and grinded to obtain a finished product.    USE - Method for preparing conductive paste that is utilized in a solar cell.    ADVANTAGE - The paste is lead-free, and has high cell photoelectric conversion efficiency and different particle sizes on the surface of solar cell when applied to solar cell production, increased contact area of particles, so that conductivity of the paste is improved, and can form silver powder with large adhesive force.    DETAILED DESCRIPTION - A conductive paste preparing method involves preparing a glass powder weighing raw material comprising 2-4 pts. wt. potassium oxide, 6.5-8.2 pts. wt. arsenic trioxide, 3-5 pts. wt. cobalt oxide, 3.5-5.8 pts. wt. tin oxide, 8-12 pts. wt. vanadium pentaoxide, 5-7 pts. wt. boron trioxide, 6-8 pts. wt. zirconium oxide, 12-15 pts. wt. silicon dioxide, 3-4 pts. wt. antimony trioxide, 7-9 pts. wt. sodium oxide, 1-2 pts. wt. magnesium oxide, and 4-6 pts. wt. copper oxide, uniformly mixing at 1100-1200 degrees C for 1.5-3 hours to obtain a molten material followed by cold water quenching, ball milling, and sieving, to obtain the glass powder with 10-15 microns. The glass powder is soaked in hydrochloric acid solution for 2-4 hours, and washed into neutrality by water, and dried. C5 petroleum resin organic carrier is prepared by mixing C5 petroleum resin, 8-10 pts. wt. polyvinylpyrrolidone, 2.9-4.5 pts. wt. polyethylene glycol, 18-19 pts. wt. diethylene glycol monoethyl ether acetate, and 15-18 pts. wt. dioctyl phthalate, stirring and dissolving at 50-65 degrees C, sieving with 300-500 meshes filter cloth, obtaining C5 petroleum resin organic carrier for further use. Thermoplastic acrylic resin organic carrier is prepared by mixing 8-10 pts. wt. thermoplastic acrylic resin, 0.5-0.7 pts. wt. tricresyl phosphate, 8-12 pts. wt. ethyl acetate, and 16-18 pts. wt. turpentine oil, stirring and dissolving at 63-68 degrees C, sieving with 300-500 meshes of filter cloth to obtain the thermoplastic acrylic resin organic carrier for further use. Material A is prepared by adding micron silver powder with the glass powder, 10-12 pts. wt. C5 petroleum resin organic carrier and chlorinated paraffin, to obtain the material A followed by preparing material B by mixing 32-34 pts. wt. aluminum powder, 24-28 pts. wt. copper powder, 10-12 pts. wt. thermoplastic acrylic resin organic carrier, and 2-3 pts. wt. castor oil. 76-79 pts. wt. material A, 18-21 pts. wt. material B, silane coupling agent, organic silicon flatting agent, 2-3 pts. wt silicon oil, stearic acid, 1-2 pts. wt. trioctyl trimellitate and 0.4-0.8 pts. wt. thermoplastic acrylic resin are uniformly mixed, ball milling, and grinded to obtain finished product.