NOVELTY - Glass sealing material comprises boron trioxide, aluminum oxide, silicon dioxide, metal oxide (RO) and manganese dioxide according to mol ratio of 0-10:0-5:25-60:20-50:5-30. The metal oxide (RO) is magnesium oxide, calcium oxide, strontium oxide and/or barium oxide.    USE - Used as a glass sealing material.    ADVANTAGE - The sealing material: has high temperature chemical stability to achieve thermodynamic regulation of the sealing glass; can reduce softening temperature by adding manganese dioxide; improves the sintering property. The method: utilizes easily available raw materials; is stable, simple and feasible; and has low cost.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) preparing the glass sealing material, comprising uniformly mixing the raw materials by ball milling, concentrating carbonate at 1100 degrees C under reduced pressure, melting, keeping the temperature at 1400-1500 degrees C for 2-5 hours, melting the glass liquid, placing into a cold water quenching treatment to obtain a glass frit, crushing the glass frit, grinding or ball milling, and sieving to obtain glass powder, (ii) placing the glass powder at the temperature of 700-750 degrees C for 2-5 hours to adjust the content of manganese(II) ion and manganese(III) ion, and (iii) adding the glass powder with a dispersing agent, a bonding agent and a solvent, and mixing to obtain slurry, ball milling in a ball mill, uniformly dispersing, casting forming, naturally drying, and then cutting into a desired shape of blank to obtain the glass sealing material; and    (2) use of the glass sealing material, comprising placing the glass sealing material in a sealed part, heating in an electric furnace at 400-500 degrees C for 0.5-2 hours at the heating rate of 1-5 degrees C/minute, then carrying out crystallization treatment by heating at 700-750 degrees C for 2-5 hours under the heating rate of 3 degrees C/minute, and then heating using a solid oxide fuel cell at working temperature under the heating rate of 1-3 degrees C/minute, and finishing sealing.