Abstract: Aiming at the problem that remanufacturing cost saving and effort level affect the recycling decision-making of closed-loop supply chain members, three different recycling models of M-mode, R-mode and T-mode under the guidance of manufacturer are constructed, and a model built by using Stackelberg game knowledge, and solves unit price, recycling quantity and recycler profit in the recycling process of closed-loop supply chain solved by using mathematical optimization method. By using the method of comparative analysis, the optimal decision of mixed recovery in closed-loop supply chain is obtained. The research shows that remanufacturing can promote the recovery of the main body when the cost saving is large; the increase of the recovery effort cost coefficient makes the profits of node enterprises and the overall profits of closed-loop supply chain system show a downward trend, and finally, the rationality of the conclusion is verified by using an example. The research provides an effective reference for the best pricing strategy of each entity in the supply chain.

Key words: closed-loop supply chain, differential pricing, recycling effort level, cost, Stackelberg game