The invention relates to the technical field of low-temperature
plasma, and discloses a combustible
waste gas treatment method. The method comprises the steps that combustible
waste gas and
rare gas are mixed, the obtained
mixed gas is injected into a
plasma treatment device from a gas inlet to be treated, one of the outermost
plasma reaction tube and the innermost
plasma reaction tube in the more than two
plasma reaction tubes (4) is provided with a gas inlet, and the other one of the outermost
plasma reaction tube and the innermost plasma
reaction tube is provided with a gas outlet. The other plasma
reaction tube is provided with a gas outlet, and two adjacent plasma reaction tubes are communicated with each other; and in each plasma reaction tube, the
mixed gas enters the plasma reaction tube from one end, and enters another plasma reaction tube adjacent to the plasma reaction tube from the other end or is discharged. According to the technical scheme, the safety of the plasma reaction is realized, and the VOCs degradation performance of the plasma is improved.