The purpose of this study is to suggest a plan for systematic support to foreign students for their successful life of studying abroad by doing an empirical analysis of the relationship between acculturation stress, learning motivation, and Korean proficiency of the foreign students residing in Korea. As a result of this study, first, acculturation stress was found to have a partially positive(+), and negative(-) influence on learning motivation; second, acculturation stress was found to have a partially negative(-) influence on Korean proficiency, and third, learning motivation was found to have a partially positive(+), and negative(-) influence on Korean proficiency. The implications of this study are as follows: First, there might be a need to encourage foreign students to do Korean learning, and lend them a helping hand so that they could solve their economic woes rather than their perceived discrimination and Korean language usage. Second, the personnel involved in foreign students are supposed to continuously have interest in socializing, and in formation of a relationship between foreign students and Koreans.