The present disclosure relates to a smoke processing device for processing smoke, which is generated by an indoor industrial site, a restaurant, or a heating means that applies heat and generates smoke, the device including at least: a smoke purification means comprising a smoke collector equipped with a smoke movement duct, the smoke movement duct comprising a smoke purifier for purifying smoke, which has been collected by the smoke collector, and discharging the purified smoke, the smoke purification means comprising a hot air movement duct for moving the smoke purified and discharged by the smoke purifier; and a heat exchange means installed on the smoke movement duct to promote heat exchange of smoke collected by the smoke collector such that the smoke is converted to high-temperature smoke and is moved to the smoke purifier.