Abstract: Aiming at the problem of decision-making efficiency and profit balance of the online shopping supply chain extended warranty service, considering the product failure rate, starting from the situation where the extended warranty price, product price and sales effort level also affect the extended warranty market demand, and using Stackelberg game to construct the extended warranty income function of the third-party service provider and e-commerce platform, the optimal extended warranty decision problem of the online shopping supply chain under centralized decision and decentralized decision is analyzed and compared, and the effect of two types of revenue sharing contracts on the online shopping supply chain for extended warranty explored. The research shows that whether it is centralized decision-making or decentralized decision-making, the failure rate of the product will affect the price, sales effort level, sales volume and profit of the extended warranty service; and the traditional revenue sharing contract cannot realize the online shopping supply chain coordination for the extended warranty service. Through the improved revenue sharing contract, ensuring that the revenue sharing coefficient is in a reasonable interval, the extended warranty service decision efficiency of the e-commerce platform, the third-party service provider and the supply chain system can be optimized, thus achieving Pareto improvement of the extended warranty benefits of the supply chain entities.

Key words: online shopping supply chain, extended warranty service, product failure rate, coordination contract