The aim of the present study was to examine the relationship between attitude towards delinquency and perceived stress and attachment styles of Tehran Azad University students.The present study is a cross-sectional study in terms of its practical purpose, in terms of time it is a quantitative study, and in terms of the research method, it is descriptive of the correlation type. For this purpose, the statistical population of the present study included all psychology students of Tehran Azad University in the number of 2400 people. 331 people were selected from the mentioned statistical population based on the Morgan and Karjesi formula. The mentioned sample was selected by available sampling method. The data was collected using the attitude towards delinquent behaviors questionnaire, the perceived stress questionnaire, and the attachment styles questionnaire. SPSS and LISREL statistical software were used to process and analyze the data and check the research hypotheses. The results showed that the fit of the conceptual model was confirmed. Examining the direct paths of the relationship between the investigated variables showed that perceived stress and anxious attachment have a positive relationship with negative attitude towards delinquency. Negative attitude towards delinquency has a positive relationship with secure and avoidant attachment style. Also, the positive attitude towards delinquency did not show a significant relationship with any of the research variables. The findings of the current research show the structural relationships between the variables of attitude towards delinquency, perceived stress and attachment styles and can be used by criminal psychologists, criminologists and other specialists. be related and play a role in crime prevention.