In modern enterprise management, sustainable supply chain is a concrete manifestation of the sustainable development strategy that synthetically considers serious environmental and resource problems. For sustainable supply chain, green procurement is an important component and significantly improves the environmental performance of enterprises. In green procurement, supplier selection is a critical issue. To scientifically evaluate and determine suppliers under the sustainable supply chain environment, we introduce the basic selection process of green suppliers and develop a systematic data envelopment analysis (DEA) approach that is objective and quantitative to evaluate and select green suppliers using the C 2 R model of the DEA method and the super-efficiency DEA model, which is based on the C 2 R model. We then construct a complete index system for green supplier evaluation according to environmental impact. Finally, this complete index system of green supplier evaluation and this systematic DEA approach are applied to an industrial case. Results confirm that the evaluation index system and methods are feasible, easily operated, and practically suitable for corporate use.