Abstract: The denitrification agents consisted of NOxGETTER-NP and NOxGETTER from JOHNSON MATTHEY were applied to FCCU of Luoyang branch , SINOPEC. The NOxGETTER is the base agent with NOxGETTER-NP as a combution promoter containg bi-metals including Pd. The nitrogen contents in feeds tested are 3 017.2，2 211.1，1 818.3 μg/g, respectively. The test is devided into 3 stages：adding NOxGETTER-NP into regenerator alone，and adding NOxGETTER-NP plus NOxGETTER keeping between 1% and 2% of the inventory, respectively. The carbon content on regenerated catalyst are low of 0.003 4, 0.008 4, 0.009 4 percentage points, respectively for 3 stages, compared with the blank caliberation. The combustion effect is good, no partial burning or tail firing. The average contents of NOx in three export flue gas are 194.5，97.6，49.7 mg/m3 with denitrification ratios of 58.14%,78.99% and 89.3%, respectively. The effect of denitrification is signifcant and the cost is 3.4，9.4，18.9 Yuan/kg, respectively .