Abstract: In order to improve the recycling rate of waste electrical and electronic products since the promulgation of the "Production Responsibility Extension System Implementation Plan", the government strongly encourages electrical and electronic product manufacturers to cooperate with retailers or third parties for recycling. In this context, based on the two power structures dominated by the manufacturer and the retailer, four types of reverse supply chain models are constructed when mixed recycling is manufacturer and retailer together or manufacturer, retailer and third party together.Using game theory, decision on mixed recycling mode was discussed from different perspectives, it is found that (1) if recycling degree is higher,that is 2s < k < 4.02742s, the optimal strategy of manufacturer is manufacturer-led and the two are mixed and recycled; If recycling degree is lower, that is k>4.02742s, the manufacturer's optimal strategy is manufacturer-led and the three firms mixed recycling. (2) Although the retailer has channel advantage in sales channel, the recycling enthusiasm is lower than the manufacturer, optimal decision for retailer is always manufacturer dominated and mixed recovery by manufacturer and retailer, the worst decision is always retailer dominated and mixed recovery by three firms. (3) If 2s < k < 3.91582s, then optimal decision for reverse supply chain system is manufacturer dominated and two firms mixed recovery, if k>3.91582s, then optimal decision for reverse supply chain system is manufacturer dominated and three firms mixed recovery. (4) According to the optimal power structure and hybrid recovery methods, reverse supply chain system's optimal decision-making is basically the same with manufacturer, optimal decision-making are both manufacturer dominated reverse supply chain; the worst strategy for three firms are retailer dominated reverse supply chain.Finally, conclusions are verified by a numerical example.The conclusions of this paper can provide theoretical references for reverse supply chain enterprises to choose recycling modes and partners.

Key words: reverse supply chain, mixed recovery model, power structure, game theory