This study aimed to investigate the relationship between parental marital conflict and domestic violence against adolescent girls, in Ahwaz. The study population consisted of all high school students and their parents in the city of Ahwaz. Of these, 384 were selected, through Multi-Stage sampling, as the sample group. The Measure of Childhood Trauma Questionnaire (CTQ, (Bernstein, 1995) and the Marital Conflict Questionnaire (MCQ) (Barati & Sanae, 2004) were used. Statistical analysis, standard deviation, and Pearson regression analysis were used. According to the study, there is a significant correlation between parental marital conflict and violence against girls. The correlation can be further broken down by the types of marital conflict (such as: failure to compromise, increased emotional reactions, and lack of support from family, relatives and friends of the spouse) and violence against the girls. However, no correlations were observed when considering the relationship between the parents with their own friends and family and the financial independence of the parents. The results of this study also suggest that a significant correlation exists between the marital conflict and type of domestic violence (physical, emotional, neglect) against the girls. The relationship with relatives and friends of the spouse had the greatest impact on the violence against girls.