NOVELTY - A glass frit paste is formed by grinding and mixing 40-99 wt.% glass powder (A), 0-60 wt.% glass powder (B) and 1-10 wt.% inorganic additive. The glass powder (A) comprises 35-65 mol% lead oxide, 8-45 mol% zinc oxide, 33-24 mol% bismuth oxide, l-14 mol% silicon dioxide, 0.2-15 mol% silver oxide, 0-5 mol% phosphorus pentxoide, 0.5-10 mol% rare-earth element oxide (R2O) and 0-15 mol% additive. The rare-earth element oxide (RO2) comprises 0-5 mol% titanium dioxide, 0-5 mol% zirconium oxide, 0-4 mol% manganese oxide and 0-5 mol% tellurium oxide.    USE - Glass frit paste is used for solar cell back sheet.    ADVANTAGE - The glass frit paste provides solar cell back sheet with high photoelectric conversion efficiency.    DETAILED DESCRIPTION - A glass frit paste is formed by grinding and mixing 40-99 wt.% glass powder (A), 0-60 wt.% glass powder (B) and 1-10 wt.% inorganic additive. The glass powder (A) comprises 35-65 mol% lead oxide, 8-45 mol% zinc oxide, 33-24 mol% bismuth oxide, l-14 mol% silicon dioxide, 0.2-15 mol% silver oxide, 0-5 mol% phosphorus pentxoide, 0.5-10 mol% rare-earth element oxide (R2O) and 0-15 mol% additive. The glass powder (B) comprises 0-60 mol% lead oxide, 30-60 mol% bismuth oxide, 0.1-60 mol% tellurium oxide, 1-45 mol% zinc oxide, 0.1-25 mol% boron trioxide, 2l-14 mol% silicon dioxide, 0.5-10 mol% rare-earth element oxide (R2O) and 0-15 mol% additive. The inorganic additive comprises 0.1-10 mol% rare-earth element oxide (R2O), 0-5 mol% rare-earth element oxide (RO), 0-10 mol% rare-earth element oxide (RO2), 0-6 mol% rare-earth element oxide (R203) and 0-5 mol% phosphorus pentoxide. The rare-earth element oxide (R2O) comprises 0-10 mol% lithium oxide, 0-10 mol% sodium oxide and 0-10 mol% potassium oxide. The rare-earth element oxide (RO) comprises 0-5 mol% calcium oxide, 0-5 mol% strontium oxide, 0-5 mol% barium oxide and 0-4 mol% copper oxide. The rare-earth element oxide (R2O3) comprises 0-2 mol% ferrous oxide, 0-3.5 mol% chromium oxide, 0-3 mol% cobalt oxide, 0-5 mol% aluminum oxide and 0-3 mol% cerium oxide. The rare-earth element oxide (RO2) comprises 0-5 mol% titanium dioxide, 0-5 mol% zirconium oxide, 0-4 mol% manganese oxide and 0-5 mol% tellurium oxide. An INDEPENDENT CLAIM is included for preparation of glass frit paste.