This study examined the role of social networks in the juvenile crime. The study was descriptive. The instruments consisted of a questionnaire of 30 questions was made by researcher. The study population consisted of all adolescent in Tabriz who used social networks. The sample in this study adolescents in society that use of social networks that Systematic random sampling method, 220 of them responded to the questionnaire. To analyze the data Descriptive analysis, t test and spearman correlation was used. The results of this analysis showed that there is a significance differences between boys and girls that using social networks (p<0/01), and girls tending more juvenile crime. Also, violence was the most juvenile crime that adolescents facing with. Other Result of this Research shows There is a significant Relation between using social networks and juvenile crime (sig=0.346). In fact, using more social networks can affect juvenile crime and increase it.