This invention discloses a catalytic cracking method for cracking hydrocarbon oil in the presence of a cracking catalyst, which comprises an appropriate amount of molecular sieve, and aluminum oxide containing additive. The cracking catalyst is prepared by: (1) mixing pseudoboehmite, water and acid by stirring to obtain mixed slurry; (2) aging the mixed slurry at room temperature to 90 de.C for 0-24 h; (3) mixing the product of step 2 with the additive; (4) mixing the product of step 3 with the molecular sieve, drying and torrefying. The catalytic cracking method has better heavy oil reforming performance. |