In addition to combustion reaction and high temperature generation, there are heat transfer, momentum transfer and mass transfer in glass melting kiln. (1) Heat transfer: including the flame space heat exchange caused by the temperature difference in the flame space and the liquid glass, the heat exchange in the heat storage room and the heat exchange between the kiln wall and the outside environment. ② Momentum transfer: incompressible gas flow, compressible gas flow, gas jet flow and liquid glass flow caused by pressure difference. ③ Mass transfer: the gas phase diffusion caused by the gas phase concentration difference and the liquid phase diffusion caused by the glass liquid concentration difference in the combustion process.