Catalytic technology is the basis of petrochemical industry. In this thesis, the technological progress of petrochemical enterprises promoted by the advance of catalytic technology was discussed, with examples .Meanwhile, petrochemical industry also raises a series of new subjects for the development of catalytic technology ： the technical revamping of existing plants require catalyst with higher activity ; the cleaning production process requires environmental friendly catalyst; the product structure adjustment requires excellent adaptability of catalyst; saving energy and lowering consumption and cost, as well as strengthening product competitiveness require continuous reduction of catalyst production cost and improvement of catalyst life, conversion rate, selectivity etc.