The aromatization reaction of liquefied petroleum gas has been studied by using three liquefied petroleum gases as raw material and LBO-A as catalyst, and a five lumped kinetics model network has been put forward on the basis of lumped theory and the aromatization reaction mechanism. In the network the aromatization reaction species were firstly lumped into C4=, C40, propylene, low molecule hydrocarbon, liquid and coke. A mathematical method is first introduced to study the product distribution of liquefied petroleum gas aromatization reaction. The results from experimental data are in accordance with the quantitatively analytical conclusions drawn from the calculated data.