Glass heating furnace and glass heating method

The invention relates to a glass heating furnace and a glass heating method. The glass heating furnace comprises a furnace body and a conveying device; an upper radiation heating element and an upper convection heating element are arranged between the conveying device and the top of the furnace body, and the upper convection heating element is located between the conveying device and the upper radiation heating element. Compared with the prior art, the upper convection heating element of the glass heating furnace disclosed by the invention can lift under the control of the convection heating lifting system, so the blowing distance between the upper convection heating element and the surface of glass can be adjusted according to the difference of glass products and the difference of process requirements; during the heating of the common glass, the temperature difference between the surface temperature of the common glass entering the furnace and hot air in the heating furnace can be reduced by adjusting the di