This paper analyzes the e-suppliers’decisions in low-end markets．Famous e-suppliers such as Taobao，T-mall and Jingdong are used as real cases in the paper．The following main conclusions are derived．Firstly，e-suppliers with little resource prefer to provide low-quality products，and the products’quality and price are lower in the decentralized supply chain than in the centralized supply chain due to double marginalization． Secondly，from the perspective of e-suppliers，both developing centralized supply chain and designing product lines can improve the quality of products and e-suppliers＇profits．However，developing centralized supply chain can improve quality of products supplied more efficiently than designing product lines，while designing product lines can improve e-suppliers’profits more efficiently than developing centralized supply chains．Thirdly，with the increasing of consumers mistaking low quality products for high quality ones，the e-suppliers’profit goes down． Under these circumstances，the quality of the high quality products remains the same while the quality of low quality products supplied improves．