Background: Parental optimistic relations and parental hostile patterns are forecaster of emotional disorders among the school children. Objectives: The study aimed at examining effect of perceived parental rejection with disruptive behaviors e.g., attention deficit hyper activity disorder, oppositional deficient disorder and conduct disorder in Adolescents of single parents. Study design, settings and duration: Cross-sectional study was conducted in universities of Rawalpindi and Islamabad for duration of 8 months. Subjects and Methods: After taking inform written consent 200 adolescents (male= 90, 45%; female=110, 55%) of age 18-23 years studying in universities of Rawalpindi and Islamabad were enrolled. Perceived Parental Rejection was measured with the help of Urdu version of Parental Acceptance-Rejection Questionnaire and Disruptive Behavior Disorders were assessed by Disruptive Behavior Disorder (DBD) rating scale. Results: Finding of the present study showed that perceived parental rejection is a significant predictor of disruptive behavior disorders e.g., ADHD, oppositional deficient disorder, and conduct disorder in adolescents of single parents with low income. It has been found that there is no significant mean difference between male and females on disruptive behavior disorders. Conclusion: The perceived parental rejection increase emotional disorders e.g., ADHD, oppositional deficient disorder and conduct disorder in children.