To investigate the operational decision-making and supply chain performance issues among green enterprises within the context of green credit, this paper constructs a three-tiered Stackelberg game model involving a bank, a retailer, and a manufacturer, investigates the impact mechanism of green credit concessions on product pricing and supply chain performance, and demonstrates the positive impact of preferential green credit on bank profitability, corporate green transformation, and achieving the consistency of overall economic and environmental benefits. It is discovered that green loan concessions lead to a reduction in the wholesale and retail prices of green products, thereby increasing demand for green products, while nongreen product prices are not affected but demand decreases. Besides, the green transformation of enterprises requires a certain green market foundation, and green credit incentives play a greater role in promoting the green transformation of enterprises by allowing green products to occupy the market earlier when the green market is still small. Under specific conditions, offering preferential interest rates for green products can increase total profit, consumer surplus, and social welfare while reducing environmental impact. However, only green products with significant environmental improvements can result in Pareto improvements.