Background & purpose: Positive parent-child relationship has an important role in children’s academic, social, and behavioral adaptations. Present study aimed to investigate the associations between parent-child relationship and aggressive behaviors among students.

Method: Present research was a correlational study with predictive design. The study population consisted of all female fifth graders who were studying in public schools of Sari city in 1393-94 academic year. The sample consisted of 254 students that were selected using random cluster sampling method. Data was collected using Parent-child relationship Survey (Fine, Moreland, and schwebel, 1983) and Shahim Aggression questionnaire for children (1385) and analyzed using Pearson correlation coefficient test and multiple regression analysis.

Results: Results of Pearson correlation coefficient test revealed significant negative correlations between parent-child relationship and aggressive behavior among students (r= -0.79, p < 0.001). Moreover, results of regression analysis showed that parent-child relationship could significantly predict aggressive behavior among children with 99 percent confidence.

Conclusion: According to our findings, we can conclude that parent-child relationship quality is a significant and influencing factor in children’s behavior, particularly their aggressive behavior.