Hydrogen is regarded as an ideal energy source because of its high energy density and no carbon,and combustion is one of the important ways of hydrogen energy utilization.By analyzing the combustion characteristics of hydrogen,it was concluded that there were three technical difficulties in the application of hydrogen replacing traditional energy sources in glass melting,including invisible flame shape,more foam on the glass surface and weak flame radiation penetration.For these three aspects,computational fluid dynamics (CFD)analysis method,changing the flame atmosphere,and adding cullet to the flame were used to compensate for the defects of hydrogen combustion in glass melting.