Abstract: This paper studies the pricing problem of closed-loop supply chains under three channel power structures,the pricing and profits are compared,and the two-part tariff contract is applied to discuss the coordination of closed-loop supply chains.The results show that the total profit of closed-loop supply chain under the case MS is the same as the profit under the case RS,and they both are lower than the profit under the case VN.The prices of the new and remanufactured products and the profit of the manufacturer and the retailer increase with the increase of the substitution coefficient.The prices of the new and remanufactured products increase with the increasing of collection effort,but the profit of the manufacturer and the retailer decreases as the increasing of collection effort.The two-part tariff contract is appropriate to coordinate closed-loop supply chains through the leader part or the third part.

Key words: closed-loop supply chain, channel power structure, pricing strategy, c oordination