The invention discloses the cracking polymerization catalyst used for waste plastics and waste grease and preparing method, comprising the following raw materials: clay powder (carrier), sodium silicate (binding agent), active agent, plasticity agent, and adjuvant (caustic soda or caustic potash solution); the proportion by weight of them being 100:0.03-0.08:0.02-0.04:0.01-0.04:0.01-0.03. The method comprises the following steps: 1 preparing the carrier; 2 preparing the plasticizer; 3 preparing the blank; 4 segmenting, shaping, drying and calcining. The said catalyst is used in oil refining technology, comprising the following advantages: good catalysis and polymerizing power, high strength, long life duration, simple technology and production facility, and low cost. The catalyst is also used to product 93# petrol and 0# light oil. |