The utility model relates to the technical field of polyvinyl chloride production processes and discloses a recovery processing device for a material-pulling replaced and evacuated gas of a generator. The recovery recycling device comprises a water scrubber, a gas-liquid separator and a purifier which are arranged in sequence, wherein an inlet of the water scrubber can be communicated with an evacuation pipeline of the generator, a gas-liquid outlet of the water scrubber is communicated with the inlet of the gas-liquid separator; an inlet of the purifier is communicated with a gas outlet of the gas-liquid separator, a top gas outlet of the purifier is communicated with the atmosphere, an acetylene gas outlet of the purifier is communicated to an acetylene gas holder. By the recovery processing device provided by the utility model, calcium carbide dust particles in replaced gas can be removed in a washing process, and the produced calcium carbide slurry can be normally discharged, so that the environment surrounding a plant cannot be affected; moreover, the acetylene gas is taken as a product gas to be recycled by virtue of pressure swing adsorption in the purifier, so that the discharge waste of the acetylene gas can be avoided and the considerable economic benefits are brought.