This research, firstly defined the key elements of lean supplier’s evaluation, built an applicable model by screening the assessment in several areas commented by experts to verifying its integrity and practicability. The automobile lean supplier assessment model built by this research is practical and effective. In the application of supplier's management, the model could assist the automobile industry in supplier's evaluation by on-site assessment to weigh its abilities in cooperation with the operation of lean production system, and then lead the suppliers to become the strong partners of supply chain to strengthen the competitiveness of core enterprises.