The invention relates to a large-tonnage floatation glass melting furnace burning producer gas, which is characterized in that: two sides of a melting part (2) are respectively and symmetrically provided with a gas flue system (8) and a gas regenerator (6) which corresponds to chauffers (16) and is communicated with the gas flue system (8); the upper part of the gas regenerator (6) is provided with a gas uptake (7) communicated with a long prechamber (13); and an air branch flue wind inlet (10) is arranged between an air regenerator (5) and a combustion air flue system (9). The large-tonnage floatation glass melting furnace has the advantages that: compared with the fuel cost of melting furnace adopting heavy oil, the fuel cost of the large-tonnage floatation glass melting furnace is reduced by about 50 percent; the adoption of the scheme that combustion air enters the air branch flue wind inlet ensures that the chauffers can obtain the combustion air with adequate pressure and flow; and the adoption of the regenerator arrangement scheme that an air box-type regenerator and the gas regenerator are additionally provided the gas uptake ensures that an air-fire partition wall cannot be burnt down and improves the service life of the melting furnace.