本研究利用PAC分析及半構造式面談手法，來探究及比較參加為期一年交換留學計畫的4位學生之留學前及留學後之日本印象，藉以分析日本印象變化及其影響原因。調查結果發現，無關乎言語能力高低，日本印象的變化可分為「好轉型」、「維持型」及「惡化型」三類。在校內外有建立友人關係的人的日本印象變化為「好轉型」跟「維持型」，只有在校內有建立友人關係的人也屬於「維持型」。但是校內外均無建立友人關係的人則屬於「惡化型」。有鑑於此，在對於留學生的語言以及生活上的支援完備的情況下，友人關係的建立與否比起語言因素更能夠影響日本印象變化的原因。上述結果將有助於留學前的事前教育、留學中的支援以及交流。

This study aimed at how the image toward Japan held by four Taiwanese students changed before and after participation in an exchange program, and analyzing the factors by performing PAC analysis and semi-structured interviews.It was found that the changing of Japanese image has three types 1. ＂changed for the better ＂, 2.＂retain＂ and 3.＂changed for the worse＂, despite their language ability. If they had good and close friendships on campus and outside, their types of change belonged to 1 and 2. Whereas, if they had close friendships only on campus, it belonged to 2. On the other hand, if they didn't have close friendships, it belonged to 3. Therefore, having close friendships is the more influential factor of changing their Japanese image rather than their language ability, under the circumstances of providing supports for the language and daily life.It is implied that these findings contribute toward the prior education, supporting for students studying abroad and interchanging between local people and them.