The paper introduces the influence of the aging temperature of catalysts and different ratios of LBO-16 and LBO-A on the aromatization reaction of Lanlian fluid catalytic cracking (FCC) gasoline. How the aromatization reaction mechanism takes place is mainly described on the surface of LBO-16 and LBO-A catalysts; at the same time, a nine-lump model of the aromatization reaction is put forward based on the corresponding mechanism. The method obtained can provide technical instruction for a petroleum chemical plant.