An exhaust gas burner, which is installed at the lower part or the head of the incinerator, and a plurality of burner nozzles are arranged inside, and each burner nozzle is equipped with an independent ignition gun, a fuel pipeline rising pipe and a valve. To the bottom, there are outlet contraction section, combustion chamber, waste gas collection cabin, mixing air collection cabin, and combustion air collection cabin; the exhaust gas burner is connected with the incinerator body through the exit contraction section, and the waste gas collection cabin, The mixing air collection cabin and the combustion-supporting air collection cabin are all equipped with independent inlets, and each collection cabin is connected to the corresponding outlet on the distribution mixing plate through the corresponding riser pipe to form independent exhaust flow channels, mixing air flow channels, Combustion-supporting air flow channel; the fuel pipeline rising pipe of each burner burner is coaxially arranged with the combustion-supporting air rising pipe, and the outlet is arranged at the combustion-supporting air outlet. The exhaust gas burner proposed by the invention has high integration degree, compact and reliable structure, sufficient incineration, high thermal efficiency and convenient operation.