This study analyzed the policies related to parents in child care centers from 1991 to 2013 as shown in the guidance for child care business book published by the government and accredited journals by the National Research Foundation. Policies related to parents in child care centers were divided into the following periods: 1) the period of passive parent education focused on low-income families (1991-1994), 2) the period of relief for dual-income families (1995-1997), 3) the period of relief for adoption families and the practice of child care support services (2004-2007), 4) the period of active parent involvement (2008-2013). On the other hand, the research trends of parent education in child-care centers were as follows: 1) the survey of parent education was the most common at first, 2) the studies of the role and disposition of parents occupied the bulk, 3) the studies of parents’ needs and satisfaction on parent involvement appeared plenty, 4) the studies of the personalized parent education increased. Consequently, the need for home care services and the importance of parents’ education were suggested.