Abstract:A supply chain decisionmaking model in which thirdparty logistics (3PL) firm provides financing services is proposed aiming at a threelevel supply chain composed of a supplier, a 3PL firm and a retailer who is subject to capital constraints and has loss aversion behavior. Under assumptions that the retailer has limited liability capabilities and that the supplier provides a credit guarantee for the 3PL’s financing, the riskneutral and riskaverse retailer’s optimal ordering quantity, the 3PL firm’s optimal loan interest rate, and the supplier’s optimal wholesale price are obtained. Through the analysis of numerical examples, the impact of unit transportation cost, retailer’s initial capital and loss aversion degree on the optimal decision of supply chain members are obtained.