Introduction: This study was to determine the relation between attachment styles and weight concerns of adolescence girls. Method: This descriptive-correlation study performed on 322 freshman, sophomore and junior high school students of Shiraz that were selected randomly. After clarifying the validity and reliability of the study tools, the main study was done by adult attachment questionnaire (AAQ) new version (1993) and weight concern scale (WCS) , Beck depression index (BDI) and body mass index (BMI) . Two way analysis of variance and Scheffe were the two statistical methods used to analyze data. Results: Girls with insecure attachment styles (avoidant and ambivalent) in comparison with girls with secure attachment were more concerned about their weight. There was no significant difference between the weights concern of subjects with avoidant attachment style and ambivalent attachment style. There was no significant affect interaction between attachment styles. Body mass index had no significant effect on weight concern. Conclusion: Attachment style knowledge can play a significant role as an important variable in predicting weight concern and also in psychopathology toward eating disorders.