This study focused on the parent.child relationship and its, which has effect on the newly.wedded marital adjustment. Based on the relationship with analyzing attachment to parents, psychological separation, and newly.wedded marital adjustment, the research was conducted focusing on explored the relationships influences among these influences things. The subjects of this study were 216 in the newly-wedded couples with less than 5 years since of marriage. The major findings of this study were as follows: First, as a result of analysis of differences in marital adjustment according to attachment to parents revealed that, the group with stable attachment to parents showed the more a smoother adjustment in their relationships with the spouses after marriage. Second, as a result of analyzing analysis of the difference in marital adjustment according to psychological separation from parents indicated that, the higher psychological separation from parents showed the related to higher marital adjustment.