Objectives: The purpose of this study was to analyze the Validity and Reliability of the Five Facet Mindfulness Questionnaire (FFMQ), using mindfulness meditation performed before and after. Methods: The study was conducted with 87 students at the university of Korean medicine who provided informed consent. The demographic characteristics and FFMQ were analyzed with regard to their validity and reliability on the effect of mindfulness using SPSS (Statistical Package for the Social Sciences, IBM, United States of America) 21.0 Version. Results: 1. The reliability and factor analysis of FFMQ : The five sub-factors of mindfulness showed strong internal consistency (Cronbach`s α＞.70). 2. Correlation analysis of the sub-factors in pre-FFMQ showed a positive correlation between Nonreactivity and Awareness, Nonreactivity and Scribing, Nonreactivity and Nonjudging, Nonreactivity and Total score, Observing and Scribing, Observing and Total score, Awareness and Nonjudging, Awareness and Total score. 3. Correlation analysis of the sub-factor in post-FFMQ showed a positive correlation between Scribing and Nonreactivity, Scribing and Observing, Scribing and Awareness, Awareness and Nonjudging. In contrast, Observing had a negative correlation with Nonjudging. Conclusions: The results of the study reconfirmed that FFMQ was useful as a reliable and valid tool for measuring mindfulness meditation.