The purpose of this study is to research how the reopening of Mt. Geumgang tours would affect the relationship between South Korea and North Korea, national security and sovereign credit ratings. A survey was conducted to analyze public opinion on reunification, the reopening of Mt. Geumgang tours and the expected effects. A total of 200 questionnaires were analyzed to present the following results. First, the more positive one is towards reunification, the more positive one is towards the reopening of Mt. Geumgang tours. Second, the reopening of Mt. Geumgang tours affects the relationship between South Korea and North Korea and national security, but does not affect sovereign credit ratings. In sum, results indicate that the Korean public believes that the reopening of Mt. Geumgang tours would improve the relationship between South Korea and North Korea, ease tension within the peninsula, reduce anxiety over national security and diminish the possibility of war. However, the public feels that it would not influence sovereign credit ratings and expand foreign investment.