Abstract: To make use of C4 olefins is extensively concerned by domestic petro-chemicals enterprises. The aromatization performance of nano-sized zeolite catalyst SHY-DL is studied in the thesis. The effect of hydrogen pressure, alkadiene content, and reaction temperature and space velocity on aromatization is explored. The results indicate that with refinery C4 as feedstock, under the conditions of 360℃ to 450℃, 2.0MPa, LHSV 0.9h-1 to 1.2h-1, the conversion of C4 olefin can be up to 99% and that the yield of dry gas is less than 2 %, the yield of C5 and C5+ is 43% to 50% and the RON and MON of the gasoline are 98 and 87.9, respectively. The cracking performance of the by-product LPG obtained in the aromatization process was evaluated on a bench scale pyrolysis apparatus. The yield of ethylene is 30.98%, the yield of ethylene and propylene is 46.93% under the cracking conditions of 910℃ and water to oil mass ratio 0.45. This illustrates that the by-product LPG is a better feed for ethylene production.