Catalytic properties of a series of Ga- and Pt-Ga-containing zeolites of ZSM-5 structure in n-butane aromatization have been studied in wide range of reaction conditions. The profound Pt promotion has been well established on the basis of product selectivities analysis at different temperatures and contact times but equal conversions. The Pt and Ga synergy was also found to increase significantly selectivity to aromatics at the account of rapid dehydrogenation and suppressing such side reactions as hydrogenolysis and hydrogenation (Pt), cracking and isomerization (Ga). Both far distance effects (hydrogen spillover) and intimate contact between Pt particles and reduced Ga (1) ions seem to be responsible for the enhancement of aromatization activity and stability of Pt-Ga zeolite catalysts. Active sites involve Pt, Ga1+ and protonic zeolite centers which formation and structure were considered in detail. Finally, aromatization process scheme was proposed to find out most important steps controlled by Pt and Ga active sites.