The purpose of this study is to apply Fuzzy Synthesis Judge to set up a model of performance evaluation criterion used to assess the quality of enterprise’s outsourcing management. This study adopts means of literature review and expert-based interviews to contribute to an adequate evaluation criteria used to measure the performance of outsourcing activities. In terms of data collection and analysis, the participants consist of experts in aviation industry. | Yugoslav Journal of Operations Research Volume 20 (2010), Number 1, 87-97 THE CONSTRUCTION OF THE FIRM’S PERFORMANCE EVALUATION MODEL ON OUTSOURCING ACTIVITIES APPLICATION OF THE FUZZY SYNTHESIS Chaang -Yung KUNG Department of International Business, National Taichung University, Taiwan cykung@ Tzung-Ming YAN Department of Insurance, Chaoyang University of Technology, Taiwan Received: June 2005 / Accepted: May 2010 Abstract: The purpose of this study is to apply Fuzzy Synthesis Judge to set up a model of performance evaluation criterion used to assess the quality of enterprise’s outsourcing management. This study adopts means of literature review and expert-based interviews to contribute to an adequate evaluation criteria used to measure the performance of outsourcing activities. In terms of data collection and analysis, the participants consist of experts in aviation industry. By means of questionnaire distribution to experts, the data analysis is applied with fuzzy synthesis judge to examine the weight value. Consequently, this study utilizes fuzzy synthesis judge to qualify the performance evaluation and determine the optimal model used to examine the efficiency of outsourcing management. This study offers a model of evaluation criterion which makes it possible for enterprises to make the best outsourcing performance. Keywords: Performance evaluation model, outsourcing activities, fuzzy synthesis judge. 1. INTRODUCTION In terms of mass production, outsourcing is widely thought of as one of the effective methods to improve management performance. Further, outsourcing is defined as the purchase of value-creating activities in which enterprises can make long-term agreements with external suppliers. Outsourcing is of great significance to enterprise’s strategic management and is referred to as a strategic concept which enables enterprises 88 C., Y., Kung, T., M., Yan / The Construction of the Firm’s Performance to add .