The invention relates to a recovery apparatus and technology of a slurry kettle exhaust gas in a PET production process. Pressure condensation and adsorption are carried out to recovery the slurry kettle exhaust gas in the PET production process, and 95% or above of ethylene glycol in the exhaust gas is recovered, so the recovery rate is high; and ethylene glycol in the pressure-condensed exhaust gas is adsorbed to further remove ethylene glycol and other possible impurity gases in the exhaust gas in order to obtain pure nitrogen, so the nitrogen consumption is reduced.