This invention relates to a preparation method of ultra-stable Y type zeolite containing amorphous silica-alumina. The said method introduces silica-alumina gel into NaY zeolite, then through ammonium ion exchange in conventional water heating method and water heating baking, the USY zeolite containing amorphous silica-alumina 5-50% (wt.) is obtained. As compared with USY zeolite made with conventional water heating method, the USY preparaed by this invention has larger constriction amplitude of crystal cell, while the high degree of crystal-reservation is maintained and structure stability is also better. The catalyst with the said zeolite as active component has better activity and water heating stability.