Since “Konkatsu” has been selected as the most popular word in year 2008 and 2009, “Konkatsu” boom starts everywhere in Japan. Not only highlights the social problem that the youngsters in Japan barely get married, but also reflects their concepts on marriage. Based on the research of the Phenomenon of “Konkatsu” from three aspects--- reasons of popularity, types and influences, Japanese youngsters’ concepts on marriage are observed and studied.