How Egyptian adolescents respond to their parents’ inter-parental conflict is relatively unexplored. This descriptive study was completed with adolescents to determine their perceptions of inter-parental conflict and the impact of this on their level of emotional security. Two hundred students from Zagazig city in Egypt aged between 13 and 17 years completed the “Children’s perception of inter-parental conflict scale” and “Security in the inter-parental system scale”. The findings showed that when adolescents witnessed inter-parental conflict they felt scared, sad, emotionally charged or unable to stop thinking about the conflict that they had witnessed. However, participants were unprepared to assist in trying to solve their parents’ conflict. Nurses need to be aware of the negative impact that inter-parental conflict may have on adolescents in their care. Interventions should focus on the preservation of the adolescent’s emotional security to prevent negative psychosocial effects occurring in the future.