The invention discloses an oily wastewater deoiling and modification ceramic composite coalescence material. The oily wastewater deoiling and modification ceramic composite coalescence material is composed of, by weight, 20 parts to 70 parts of activated aluminum oxide materials r-Al2O3, 20 parts to 70 parts of kaolin, 5 parts of feldspar, 10 parts to 20 parts of pseudo-boehmite, 5 parts to 30 parts of wood charcoal, and 0.1 part to 40 parts of oxidized polypropylene or polythene organic polymer materials. Prescription making, ball-milling and smashing, kneading, vacuum pugging, extrusion forming, drying and sintering are conducted to enable an aluminum oxide cellular material to be obtained, the sintering temperature is controlled between 480 DEG C and 1500 DEGC, a green body is sintered for 10 hours to 24 hours, and then the green body is covered with the oxidized organic polymer materials; the aluminum oxide cellular material is covered with the oxidized polypropylene or the oxidized polythene at the temperature ranging from 100 degrees to 680 degrees, and then the composite modification ceramic coalescence material formed by the oxidized organic polymer materials covered with the aluminum oxide cellular material is obtained. The oily wastewater deoiling and modification ceramic composite coalescence material has the advantages of being high in adsorbability, long in service life, capable of being resistant to acid and alkali, and good in deoiling effect.