Under the background of Shanghai Baosteel Yichang Co Ltd and its E-business system, the performance evaluation index system of E-business marketing is designed for the company in terms of costs benefit, marketing efficiency, competitive effect, service quality and website popularity. Utilizing the qualitative analysis and quantitative calculation methods, a multi-layer fuzzy synthetic evaluation model is established. By using this model, the case calculation and demonstration analysis of the E-business marketing performance for the company is carried cut. As a result, it realizes the performance evaluation of E-business marketing for Baosteel Yichang Co Ltd.