Abstract: Based on the coking test of vacuum residue, FCC slurry and ethylene tar in domestic laboratory, the benefits of three kinds of raw oils processed by delayed coking were simulated. The results show that the benefits of unit decline in different degree when the vacuum residue oil blending with FCC slurry and ethylene tar are processed. However, the analysis shows that the benefit of refinery processing FCC slurry and ethylene tar is better than the two raw materials are directly sold as products. The reason lies in more low value common petroleum coke produced when FCC slurry oil and ethylene tar with vacuum residue oil are co-processed. By analyzing the compositions and structure of three raw oils, and coking mechanism, the feasibility of processing ethylene tar in industrial delayed coking unit is discussed. The ways and measures for production of high quality petroleum coke with ethylene tar are proposed.