This research have an object that trace the flow of awareness of unification of South Korean, by so analyzes timely and synthetically analysis of various factors influencing on necessity recognition of Korea reunification. The results of the analyses, necessity recognition of Korea reunification in South Korean lower by year, and necessity recognition of Korea reunification of 2014 than 2006 get lower statistically significant level. Sex, age, academic background, self-esteem as Korean, political bias, attitude toward North Korea is factors influencing on necessity recognition of Korea reunification both 2006 and 2014. And size of lived area, a monthly average family s total income, prospect about Korean economy was not extend to necessity recognition of Korea reunification in 2014 year, but degree of exchange opinion about Korea politics, belief about korea military was strong extend to necessity recognition of Korea reunification in 2014 year. It saw that decrease economic influence, but increase politic and social influence. According, I suggests that must offer at different reunification education based on Sex, age, academic background, self-esteem as Korean, political bias, attitude toward North Korea. Also, I suggests that must limpidly administrate state affairs for positive Korea sociey’s politic and social prospect.