The objectives of the unit Family Relations in high school Home Economics Education is to help the students cultivating proper values and self-esteem, maintaining harmonious personal relations not only by understanding hyman relationships in family, but also by acquiring role play, and is to wisely cope with many problems occurring in social life, which are indispensable for those living in modern society. But at present it is hard for the students to gain those abilities mentioned above, for the pesent unit Family Relations lays special emphasis only on memorizing specific knowledge about the understanding of a family. To improve the present educational situation, this study develops a new teaching-learning method based on the role play model concerning the Family Relation area of high school Home Economics Education curriculum. This study is theoretically based on the literature and previous studies on present problems of our various family relations, and solving its problems, and suggests lesson model of role play and its effect. This study was performed as following procedures:the Family Relation unit of the present high school Home Economics Education curriculum was analyzed, and surveyed students to discover the conflicts and their solutions the high school students are now experiencing in their family relations. Accordingly, a new lesson model of the Family Relation area, applying role play was developed. Based on the developed lesson plan, two two-hour classes were experimented and positive evaluation was given by students.