The invention discloses a glass melting furnace combusting system which exchanged by furnace gas and coke oven gas, including a gas total flue, several gas branch flues, several flow regulating devices, several gas heat storage chambers, a coal exchanger, a gas disc valve, a combustion air fan and a valve. One side of several gas branch flue is connected to gas general flue and the other side is connected to several gas heat storage chambers; several flow regulating devices are correspondingly set into several gas branch flues; one headwall of gas general flue is connected to the gas exchanger, and through the gas disc valve prevent the external furnace gas into the gas exchanger, the other side of the headwall through the valve is connected to the fan; when generator gas occurs in the combustion, open the gas disc valve, the generator gas through the gas exchanger enter the gas general flue; when switched to the combusting coke oven gas, close the gas disc valve, start the combustion fan, and combustion wind through the valve enter the gas general flue.