In recent years, with the booming development of the B2C cross-border e-commerce industry, the supply chain of B2C cross-border e-commerce faces many potential risk factors, which must be prevented. To solve this problem, this paper studies the supply chain risk factors of B2C cross-border e-commerce and puts forward avoidance strategies. First, the fitness network model of a dual local world is constructed by combining the fitness model with the local world model. Then, the fitness network model of the dual local world is verified by the risk dynamics simulation model to fit the actual network situation. On this basis, the SIRS virus transmission model is constructed to simulate the risk transmission of the B2C cross-border e-commerce supply chain, and the evaluation index system of the supply chain risk immunity ability and external risk intensity are established according to the supply chain risk immunity ability and external risk intensity. AHP is used to calculate the factors that have the greatest influence on supply chain risk immunity and external risk intensity. The results show that: from the point of view of the enterprise’s own risk immunity, it is more necessary to ensure the stability of the company’s capital and to establish a perfect risk monitoring and coping mechanism to avoid risks. From the perspective of enterprise external risk intensity, the risk should be avoided from two aspects of transaction security and logistics.

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With the deepening of education system and the college expansion plan in China, universities have witnessed great changes in personnel training, capital source, funds management and performance evaluation. However, the current system of internal control in universities fails to match to these new trends which cannot adapt to these new needs of fostering talents, scientific research and serving for society to some extent. Thus, how to improve the theory and practice of the system of internal control in university has become a new hot point for experts at home and abroad.

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.