Combustor and using method thereof

The invention relates to the technical field of combustors, in particular to a combustor and a using method thereof.The combustor comprises a combustor body, a furnace end body, a main igniter and a secondary igniter, the main igniter and the secondary igniter are used for conveying fuel gas and air into the furnace end body, and the furnace end body is installed on the combustor body; the furnace end body is provided with a first cavity and a second cavity which are not communicated with each other, the main igniter and the secondary igniter are both fixedly mounted on the furnace end body, and the main igniter and the secondary igniter are respectively communicated with the first cavity and the second cavity, or are respectively communicated with the second cavity and the first cavity; the burner is provided with a flow sensor and an early warning device which are used for sensing the fire outlet amount of the main igniter and the fire outlet amount of the auxiliary igniter, and the flow sensor is electrica