Based on a 1 400 kt/a ethylene complex and 13 typical ethylene feedstocks, an ethylene complex model was developed using SPYRO cracking furnace simulation software and Petro-Sim process simulation software. This modeling yielded comprehensive product yield data for various ethylene feedstocks. By integrating actual production data and industry experience, the processing cost per ton of different ethylene feedstocks was determined, and a benefit evaluation model for different ethylene feedstocks was established. This evaluation model enables enterprises to quickly complete the benefit evaluation, optimization and ranking of ethylene feedstocks based on market dynamics, and provides a scientific basis for enterprises' production and operation decision-making.