The purposes of this study are studying the benefits of a study abroad focusing on two research questions: 1.) What are the advantages gained from study abroad? and 2.) What are the disadvantages gained from study abroad? The population of the study is a graduate student who studied at Kasetsart University. The data for the study were collected with an in-depth interview. The qualitative data were content analyzed. The in-depth interview was used to identify the facts about the benefits of a study abroad, which the result of this study shows that the result of in-depth interview is consistent with the theory of this research.