Abstract: The flue gas from pyrolysis and coking industry is always in low temperature range and contains high content of water vapor as well as other other pollutants such as tar and carbon black,making the traditional flue gas purification technology for power plant unsuitable for the pyrolysis and coking fields. In order to provide new ideas and references for the technology upgrade of end-stage flue gas treatment in pyrolysis and coking processes,the latest application progress of the promising end-stage flue gas purification technology was summarized. Accordingly,the two relatively mature coking flue gas purification technical routes were dry desulfurization/bag filter dedusting/low temperature denitrification and integrated desulfurization and denitrification of activated coke. Although the integrated technology of catalytic ceramic fiber filter has been successfully applied in glass industry abroad,it was still not long for its application in the field of coking flue,deserving more attention for potential risks. In addition,oxidation coupling wet absorption technology was not widely used in industry due to its serious secondary pollution. After analyzing the existing problems of the current technologies,solutions were proposed with clear research directions and upgrading routes for the further development of these technologies. To improve the process of dry desulfurization/bag filter dedusting/low temperature denitrification,the further research will mainly focus on treatment of desulfurization ash,recovery of spent catalysts and in-depth process optimization. Researches on integrated desulfurization and denitrification of activated coke should focus on the evolution of activated coke characteristics in multiple cycles,control of carbon loss during regeneration and recovery of waste coke powder. Potential issues of integrated technology of catalytic ceramic fiber filter need be further examined,such as ammonia escape,catalyst deactivation and blocking tube by tar. Finally,combining the characteristics of pyrolysis coking flue gas,it was concluded that the key to the pyrolysis coking flue gas purification was the coupling of low temperature denitrification technology and other pollutant control technologies,and the further development trends will be the integrated purification,simple maintenance of equipment and low operating costs of flue gas purification products and technologies.