The current research design was descriptive-correlation research. The statistical population of the research includes all the children of the witness families living in the border provinces of Iraq, which was selected based on Morgan's table, a sample of 250 people was available. The data were collected using the social support scale, flexibility of emotion regulation strategies and post-traumatic growth scale and were tested and analyzed using the Pearson correlation method and structural equation model in SPSS24 and AMOS24 software. The results showed, there was a direct and significant relationship between social support and resilience with post-traumatic growth. Also, emotion regulation strategies indirectly mediated the effects of resilience and social support on post-traumatic growth. It is suggested to pay attention to resilience training, emotion regulation and support for people who have experienced trauma.