Abstract: The iron deposited contact carriers were characterized by BET, NH3-TPD,SEM-EDX and their MAT and residue cracking performance were evaluated by micro-reactor and fixed-fluidized bed reactor, respectively, using Tahe AR as feedstock. The results show that the specific surface area, pore volume, total acid amount and micro activity of contaminated carriers are all reduced with contamination increasing. However, the pore size distribution has little change. The iron from iron naphthenate can deposit evenly in the bulk phase of the carriers with suitable larger pore structure, and the iron enrichment on the surface is not obvious. The iron contamination has a marked effect on the product distribution of Tahe AR cracking reaction.