The utility model discloses a carbonization treatment apparatus comprising a first nitrogen supplying loop and a first waste gas discharging channel and further a second nitrogen supplying loop and a third nitrogen supplying loop. The second nitrogen supplying loop is formed by a liquid nitrogen pot and a loop, wherein the liquid nitrogen pot is connected with a cyanogens rectifying tower via a pipeline; then liquid nitrogen is conveyed to a carbide furnace and discharged via the first waste gas channel. The third nitrogen supplying loop comprises a liquid nitrogen pot and a loop, wherein the liquid nitrogen pot is connected with a resolved ammonia rectifying tower via a pipeline; and then liquid nitrogen is conveyed to a carbide furnace and discharged via the first waste gas channel. Poisonous substance like tar, CO,HCN and NH<3> can be condensed and precipitated during the carbonation process of the carbide furnace via cooling capacity produced during liquid nitrogen gasification and discharged into the atmosphere after becoming non-poisonous and meeting emission standards, so cooling capacity produced by the liquid nitrogen of the three nitrogen supplying loop and waste gas during the overall carbonization process can be treated; and unfavorable effects on environment can be reduced and environment can be protected.