The effects of various reaction factors of fuel oil from polypropylene waste by catalytic transformation of pyrolysis were studied, such as temperature, catalyst and so on. On the laboratory condition, using self-making PZSM-5 zeolite as catalyst, when the dosage of catalyst is 8%, and the temperature is 300 ℃, the yield of oil is 82.94%. The gasoline and the diesel oil received by distillation of the oil can meet the requirements of correlative national standards.