Abstract: We model the secondary supply chain system composed of a supplier and a seller as an example. Based on different policyholders, this paper discusses the effect of interruption risk transfer and specific impact mechanism of the supplier-insured, seller-insured, and co-insured models, and provides theoretical support for supply chain collaborative management and control of interruption risk and innovation of business interruption insurance mode for major public emergencies. The relevant research conclusions include: Business interruption insurance for major public emergencies can effectively transfer the risk of enterprise interruption, and achieve the goal of value realization and value appreciation through supply chain transmission; The choice of the best policyholder between the manufacturer and the seller depends on specific circumstances; The business interruption insurance for major public emergencies has a certain complementary and replacement relationship with the interruption penalty contract and the wholesale price contract, and also has a certain smoothing effect between the interruption penalty coefficient and the order quantity.

Key words: business interruption insurance for major public emergencies, interruption penalty, collaborative management, interruption risk transfer