The purpose of this study is to provide fundamental information of the practice of coming-of-age ceremonies as a family event. In order to achieve the purpose of this study, research questionnaires were developed, and 321 mothers residing in Seoul, South Korea were selected as the research subjects. The study was conducted from April 15th, 2010 to June 25th, 2010. The collected data was analyzed using SPSS17 computer programs. The conclusions are as follows. 1. In the future, coming-of-age ceremonies will be necessary in family event. 2. Education for mothers (specifically for mothers under the age of 30) opposed to coming-of-age ceremonies is necessary. 3. The contents for the education of coming-of-age ceremonies must include ceremony processes, alcohol consumption etiquette, and sex education. 4. Coming-of-age ceremonies, as family events, will be desirable to have on the 19th birthday. 5. Education of coming-of age ceremonies must be done in schools or social educational institutions. The Healthy Family Support Center will especially be able to play a central role. 6. Education of coming-of-age ceremonies is necessary even from the popular media.