The invention relates to the field of catalytic cracking oil slurry treatment, and discloses a method for combined processing of a catalytic cracking oil slurry. The method comprises: (1) mixing a catalytic cracking oil slurry, an amphoteric surfactant and a diluent, and making the obtained diluted oil slurry contact water in a fiber liquid membrane contactor, wherein the fiber liquid membrane contactor comprises a mass transfer space filled with fiber filaments; (2) carrying out oil-water-solid three-phase separation on the material obtained in the step (1); (3) making the oil phase obtainedin the step (2) contact hydrogen, and carrying out hydrotreating; and (4) extracting and distilling the hydrogenated product obtained in the step (3). With the method of the present invention, the solid powder in the catalytic cracking oil slurry can be continuously and efficiently removed so as to improve resource utilization rate of catalytic cracking oil slurries.