We study the price-making strategies and extended warranty offering mode in a closed-loop supply chain consisting of a manufacturer and a retailer.The results show that when the EW service cost is same and decision-making mode is decentralized, the retail price and wholesale price are lower while the sales and the recycling rate and EW price and profit of member of supply chain and total of whole system are higher with EW providing by retailer;No matter how kind of EW providing mode, the retail price is higher while the sales and the recycl...