Aiming at the problems of adsorption tower fire, ammonium crystallization in adsorption tower, adsorption tower corrosion, net flue gas dust over proof, corrosion in the resolution tower, and non-compliance of sulfuric acid coloration in the treatment of sintering head flue gas in the activated coke desulfurization and denitrification process, by analyzing the causes of the problem and combining production, it is proposed to strictly control the bed temperature within 150℃, control the mass concentration of HCl and SO₂ in the main outlet flue gas, optimize operation, clean the crystal in time, reduce the flue gas acid dew point temperature, control the flue gas temperature and security nitrogen temperature into the tower, and improve equipment operation and maintenance; reduce the active coke powder, control the generation of ammonium salt aerosol, control the flue gas dust into the tower, inject enough nitrogen into the feed section of the regeneration tower and the bottom of the regeneration tower, and guarantee the nitrogen temperature above 120℃; properly operate and maintain, ensure the analysis of the flue gas temperature in the tower; strictly control the washing parameters, regularly calibrate sulfuric acid concentration, strictly control dry acid concentration, strictly prohibit acid temperature exceeding technical specifications; regularly do a good job of anode protection device operation records and other post work parameters and other preventive measures. All of the implementation of these preventive measures can effectively solve the problems in the process.