Abstarct: Evaluating the suppliers and supporting their continuous improvement has become to a critical issue in supply chain management activities. Since the performance of an organization in the supply chain, depends on the performance of its suppliers, it is desirable that the evaluation of a single supplier be integrated with the evaluation of whole supply chain. In the first phase of this research, those performance attributes of the SCOR model which can be applied for evaluating the performance of medical laboratory suppliers were driven, and then by asking the opinions of the experts and the reviews which have been done, the performance dimensions and attributes which were specifically for evaluating the medical equipment suppliers were added to them and in this way the final performance attributes of the research were driven. This study aims to provide a new hybrid approach for evaluation the suppliers. For this, the performance criteria of the SCOR model are considered for evaluating the suppliers of medical laboratory equipment in performance of delivery, cost and quality dimensions. In order to illustrate the interactions between the attributes involved in decision making and simulating the fuzzy mechanism of human thinking, a group decision making model has been developed in which that the evaluation values are presented by triangular intuitionistic fuzzy numbers. By relying on fuzzy Einstein choquet integral geometric operator, the values given by each expert are aggregated due to multiple attributes in the form of triangular fuzzy intuitionistic numbers and also some of its interesting properties are being studied. The PROMETHEE II model is being used in order to achieve a group decision and to select the best suppler of the equipment. The advantage of the proposed approach is that it can fully use the interactive information available in the main data and the subjective information of the expert’s mind.