The purpose of this paper is to recognize an importance of its practice by rightly understanding mindfulness, and to find one method to solve the success of Information Systems outsourcing through mindfulness practice. To do this, this paper proposes and analyzes a theoretical model consisting of factors such as contract completion, relationship strength, mindfulness practice, trust level and Information Systems outsourcing success. Data was collected using the survey method, and was analyzed using the PLS method. The results of this empirical study are summarized as followings. First, mindfulness practice has positive effects on Information Systems outsourcing success as well as trust level. Second, both contract completion and relationship strength have positive effects on mindfulness practice. The findings will provide basic data for understanding the role of mindfulness practice in Information Systems outsourcing success.