This paper takes B2C platform enterprises as the main subject of evaluation and considers the construction of e-supply chains among complementary roles of the platform as the research object. It considers distributors-retailers-consumers as each ring of e-supply chains and uses supply chain flexibility, supply chain performance, supply chain risk, supply chain credit, and supply chain competitiveness as indicators to comprehensively evaluate multiple e-supply chains on the same type of platform enterprises. Innovations: (a) It focuses on the micro-environment of the e-supply chain where the platform enterprises and complementary players are located. (b) Combining the entropy method “from cause to effect” and the fuzzy comprehensive evaluation method “from cause to effect,” combining objective and subjective empowerment and dividing the expert interviewees into roles in the supply chain. (c) Unlike the traditional evaluation mechanism, where the analysis target is independent of the supply chain, this paper focuses on analyzing the overall and comprehensive performance of the e-supply chain built by complementary platform roles in various dimensions.