Purpose : Most couples have communication problems in their married life, the existence of chaotic relationships has destructive effects on formation of emotional divorce among couples: purpose of this study was to present a model of emotional divorce based on differentiation with mediating role of attachment styles and experience of we-ness. Methodology : the research method was descriptive-correlational and the statistical population included all parents of students referring to counseling and guidance centers of association of parents and educators of Tehran in 2020 that their number was1836 people.the statistical sample size was considered based on Sample Power statistical software (350 people),and sampling method was multi-stage random.research tools included, Guttman (2008) Emotional Divorce Scale, Skorn and Friedlander (1989) Differentiation inventory, Collins and Reed(1990)Attachment Styles Scale, Vedes, Nussbeck,Bodenman (2013) Experience of We-ness Questionnaire,in this study, data analysis was performed using SPSS software and Smartpls Structural Equations. Findings : the results showed,presenting the model of emotional divorce based on differentiation with mediating role of attachment styles and experience of we-ness, accordance with the theoretical model and has a good fit,also,the study of direct path showed that there is asignificant negative relationship between the components of differentiation, attachment styles and experience of we-ness with emotional divorce and the results of the indirect path also showed that differentiation has a significant negative relationship with mediating role of attachment styles and experience of we-ness with emotional divorce and intensity of desired effect. Conclusion : Inordertocreate cohesion and create asatisfying marital relationship based on recognizing the emotions of each couple and modifying the attachment style and type of differentiation of couples,we can confront the psychological elements to improve the relationship between couples during medical considerations