The purpose of this paper is to analyze the relation between insecure attachment and dream. This study aims to analyze how the insecure attachment emerges in dream as mother complex, and how to look for the change of dreams through counseling. As a result, the woman with insecure attachment has repeatedly experienced the anxiety and fear in a dream and mother complex shows that the fear and eager to be with symbolic bad object. However, the energy of aggression was going to have an external orientation and integration through counseling. The dream appeared in this process showed that the transformation from negative mother complex to positive mother complex love and empathy. The first part of this paper presents the relationship between REM sleep and attachment, insecure attachment and complex in terms dreams. The second half of this study analyses of dream transformation process based on actual case.