To provide a burner allowing an emulsion fuel to be used without anxiety by eliminating its disadvantage because the emulsion fuel is re-evaluated in these days due to skyrocketing fuel prices and the demand for detoxication of combustion exhaust gas or the like, but it is said that its combustion has not been stabilized yet, which is caused by a creaming phenomenon of the emulsion fuel due to the passage of time; and to provide its burning method.

This burner has both a combustion nozzle connected to an oil tank and a combustion nozzle connected to an emulsion fuel tank. In this burning method, both the combustion nozzle connected to an oil tank, and the combustion nozzle connected to an emulsion fuel tank are used, the combustion nozzle for oil is ignited in ignition and the nozzle for the emulsion fuel thereafter or simultaneously ignited.