Facing the change of economic environment and the need of enhancing competitive advantages, small and medium-sized enterprises in Taiwan utilize â\u80\u98Taiwan TrainQuali System (TTQS)â\u80\u99 on training talents. In order to maximize the benefits of TTQS implementation and increase the training efficiency, this paper aims to use â\u80\u98grey relational analysis (GRA)â\u80\u99 to extract key success factors (KSFs) from 46 factors, which influence the implementation of TTQS. Moreover, this study also verifies the KSFs with nine case companies which have won gold medals in TTQS evaluation and sum up 12 concrete practices as references for other enterprises in order to show how to implement the TTQS training quality system better in the future, and in turn enhance the quality and performance of human resource training