Introduction: The goal of this research is surveying the relation between attachment, Self-concept and loneliness in the students of secondary school of Eastern Bandpey of section in Babol of city. Method: the method in this research is Descriptive of a Correlation type and 278 students (139 girls and 139 boys) have attended in by filling out Hazan and Shaver Interest style questionnaire, Rogers Self concept scale and UCLA loneliness scale. Results: for analyzing the data we used Correlation coefficient and regression analysis. Conclusion: results showed that there is a meaningful relation between attachment and feeling style. There is no meaningful relation between Attachment style and self-conception. There is a significant inverse relationship between self-conception and loneliness. Attachment style is a stronger predictor of loneliness than self-conception.