The catalytic cracking catalyst of heavy oil (English name catalytic cracking catalyst of heavy oil) refers to the tar, visbroken distillate oil and vacuum residue oil obtained through solvent extraction in the petroleum refining industry. Extracted oil, hydrotreated normal pressure heavy oil and vacuum residual oil, and even heavy oil components such as normal pressure heavy oil and vacuum residual oil themselves are used as raw materials for the catalyst used in the cracking reaction. The heavy oil catalytic cracking process is called RFCC (residue fluid catalytic cracking), which is a secondary processing process in petroleum refining. Heavy oil catalytic cracking catalyst is the core technology of the RFCC process. After years of research and development and improvement on heavy oil raw materials, its composition is a complex mixture of various functional components, but it is still the cracking catalyst itself containing Y-type zeolite, which plays the main role. Cracking function, other added components (such as combustion accelerant, octane agent, SOX transfer agent, etc.) can also be used as separate particle additives. The development of heavy oil catalytic cracking catalysts with a reaction temperature of 480~510℃ and a pressure of 0.2~0.35MPa is based on increasing the residual oil blending ratio as much as possible, taking into account the characteristics of different raw material properties, device operating conditions and target product distribution requirements. Features developed. There are hundreds of kinds of patented heavy oil catalytic cracking catalysts that have been successfully developed at home and abroad for industrial production, and heavy oil catalytic cracking catalysts with new functions are still emerging.