Catalytic cracking catalyst and process for preparing the same

A catalytic cracking catalyst, comprising 10-70 wt % of a cracking active component, 10-60 wt % of a binder and 10-70 wt % of a clay,

• wherein the cracking active component comprises 5-100 wt % of a first Y molecular sieve and 0-95 wt % of a second molecular sieve;
• wherein the first Y molecular sieve is obtained from a modification treatment of a molecular sieve based on crystal modification of kaolin, and has a sodium oxide content of less than 2 wt %;
• and
• wherein, based on an XRD pattern thereof, the molecular sieve based on the crystal modification of kaolin has a crystallinity calculated by a peak height method of ≥60%, and a ratio of the crystallinity by the peak height method to a crystallinity calculated by a peak area method is K1, K1=0.76-0.89;
• and
• wherein the molecular sieve based on the crystal modification of kaolin has a silica-alumina molar ratio measured with a unit cell constant a0 of 5.0-5.5, and a ratio of the silica-alumina molar ratio measured with the unit cell constant a0 to a silica-alumina molar ratio measured with a chemical method is K2, K2=0.87-0.93.