Abstract Background Child laborers are often defined as work that deprives children of their childhood, their potential and their dignity, and that is harmful to physical and mental development. Child laborers are one of the most vulnerable groups in domestic violence. Domestic violence severely affects the physical and mental health, and consequently affects substance dependence and resilience to suicide of these children. Accordingly, it is essential to examine domestic violence, substance dependence, and suicidal ideation in working children. Objectives the present study aimed to investigate the relationship between exposure to domestic violence and substance dependence and suicide resilience on the other among child laborers in Iran. Methods This study employed cross-sectional research. 600 child laborers were selected via convenience and snow ball sampling from one rehabilitation and welfare center and three charity organization societies in the west of Iran, from January to August 2022. They completed questionnaires. Data were analyzed by SPSS software version 22 and with using descriptive statistics (frequency, percentage, mean and standard deviation) and ANOVA, independent t-test and the multiple linear regression model with a backward strategy. Results Findings showed that exposure to domestic violence has a strong and direct correlation with substance dependence (r = 0.94, p