The aromatization reaction of fluid catalytic cracking (FCC) gasoline and C4 liquefied petroleum gas (LPG) have been studied by using three FCC gasolines and three C4 LPGs as raw material and LBO-A as a catalyst. Thus, the aromatization processing function has been put forward. They can predict the gasoline yield and the aromatics yield under various operating conditions and the change trend of Lanlian FCC gasoline, Fushun FCC gasoline, Huabei FCC gasoline, Huabei C4 LPG, Hua'ebin C4 LPG, and Qilu C4 LPG with the change of the aromatics processing function. The calculated values of gasoline production and aromatics yield are close to the experimental values.