NOVELTY - An aluminum paste is obtained by mixing aluminum powder, glass powder and organic binder, mechanically-stirring, and grinding. The organic binder is obtained by add-mixing polyol ester as organic solvent, organic boron-modified butyl methacrylate polymer, ethyl cellulose and phenolic resin, mechanically-stirring, heating, cooling, and filtering. The glass powder is obtained by mixing bismuth(III) oxide, boron trioxide, silicon dioxide, aluminum oxide and vanadium pentoxide in high temperature furnace, heating, water-quenching, drying, grinding, and again drying.    USE - Aluminum paste is used for solar cell.    ADVANTAGE - The solar cell containing the highly-efficient aluminum paste has excellent photoelectric conversion efficiency and improved concentration of back-surface-field.    DETAILED DESCRIPTION - An aluminum paste is obtained by mixing 75 pts. wt. spherical aluminum powder, 3-5 pts. wt. glass powder and 20-22 pts. wt. organic binder, mechanically-stirring for 30 minutes to obtain pre-mixing slurry, placing the slurry into a grinding machine and slurry to fineness of 12 mu m or less, discharging when the viscosity of slurry reaches 27000-35000 MPa.second. The organic binder is obtained by add-mixing polyol ester organic solvent, 1-4 wt.% organic boron-modified butyl methacrylate polymer, 3-6 wt.% ethyl cellulose and 0.1-0.4 wt.% phenolic resin in a reactor, mechanically-stirring the mixture at 70-90 r/minute, heating at 120-150 degrees C, stirring at constant temperature for 2-4 hours, uniformly-mixing, cooling to 80 degrees C, filtering through wire filter, measuring the viscosity of filtered liquid, and discharging when the viscosity of liquid is 27000-30000 MPa.second. The glass powder is obtained by mixing 10-60 pts. wt. bismuth(III) oxide, 10-25 pts. wt. boron trioxide, 5-10 pts. wt. silicon dioxide, 3-10 pts. wt. aluminum oxide and 1-8 pts. wt. vanadium pentoxide in high temperature furnace, heating at 1100-1200 degrees C and maintaining for 1-2 hours to obtain glass liquid through water quenching, drying the obtained liquid to obtain glass semi-finished product, and grinding and again drying.