The invention provides a peptizing aluminum adhering agent and a preparation method of the peptizing aluminum adhering agent. The preparation method comprises the steps of: mixing and pulping an aluminum adhering agent and acid to obtain first slurry, wherein the pulping temperature does not exceed 30 DEG C, the use amount of the acid ensures that the pH value of the first slurry is 2-4.5; and introducing the first slurry into a second peptizing kettle to be in contact with alkali to obtain second slurry, wherein the contact temperature is 50-100 DEG C, the use amount of the alkali ensures that the pH value of the second slurry is 5-9. The invention also provides a catalytic cracking catalyst and a preparation method of the catalytic cracking catalyst. Even if physical and chemical properties of aluminum adhering agents in different batches change, the physical and chemical properties of the catalytic cracking catalyst are not very different, namely, the catalytic cracking catalyst prepared by adopting the preparation method is good in repeatability and has the advantage of high activity.