Introduction: The purpose of this study is a comparative survey of attitude toward police aggression, and frustration tolerance between delinquent and normal groups.

  Method: The samples are two separated groups, one group is, 100 delinquent boys and 30 delinquent girls and the others group contained 100 boys and 30 student girls (they aren't delinquent). That design of this research is ex-post factor, and theoretical model of this research is containment theory. Besides, questionnaire of attitude toward police, aggression, and frustration tolerance test was used

  Findings: The findings have shown, the attitude toward police in normal group is positive than delinquent group. Aggression level in delinquent group is higher than normal group. Frustration tolerance in normal group is higher than delinquent group.

  Attitude toward police in normal girls is positive than other groups.

  Frustration tolerance in normal boys is higher than other groups.

  Conclusion: Between frustration tolerance and aggression in normal girls and delinquent boys there is a significant relationship.