The invention discloses a treating device for waste gases and residual heat of a setting machine. The treating device comprises a setting machine shell, a water tank, a suctioning fan, a filtering device, a drying device, a radiating pipe, a limiting sensor, a temperature sensor, a blower and a bracket, wherein the water tank is fixedly arranged in the setting machine shell; the suctioning fan is connected with a waste-gas outlet of the setting machine shell; the filtering device is connected with the suctioning fan; the drying device is connected with the filtering device; the radiating pipe, the limiting sensor and the temperature sensor are arranged in the water tank; the blower is connected with the radiating pipe; the bracket is used for supporting the filtering device and the drying device; the suctioning fan, the filtering device and the drying device are connected between the waste-gas outlet of the setting machine shell and an air inlet hole of the radiating pipe by pipelines; an air outlet hole of the radiating pipe is connected with the blower by a pipeline; and the water tank is provided with a water injecting hole and a water discharging hole. The treating device disclosed by the invention has the advantages that grease and particulate matters in the waste gases of the setting machine can be effectively filtered, simultaneously the residual heat of the waste gases of the setting machine can be fully utilized, so that the energy-saving and consumption-reducing effects and the environment-protecting effect are achieved.