The invention discloses a waste gas treatment device used for catalytic combustion, and relates to the technical field of waste gas treatment. The waste gas treatment device comprises a treatment mechanism, a heating chamber, a catalytic chamber, a gas inlet pipe, a gas outlet pipe, a negative pressure pump, a first valve, a driving motor, a rotating roller and a spiral blade. The heating chamber and the catalytic chamber are formed in the treatment mechanism, the heating chamber is located above the catalytic chamber, the gas inlet pipe is arranged at the top of the treatment mechanism, the negative pressure pump is arranged on the surface of the gas inlet pipe, the gas outlet pipe is arranged at the bottom of the right side of the treatment mechanism, and the first valve is arranged on the surface of the gas outlet pipe. According to the device, a catalyst and waste gas can be fully mixed, the mixing time of the catalyst and the waste gas can be shortened, the waste gas can be more comprehensively catalyzed, fine solid impurities in the gas can be filtered, meanwhile, the quality of a catalytic product is improved, the filtering function is enhanced, and the practicability of a filtering mechanism in the waste gas treatment device used for catalytic combustion is improved.