Background: Domestic violence remains a significant global health problem for women in the current society. Child's exposure to Domestic violence is widely acknowledged as a threat to the psycho-social and academic well-being of children. Aim of the study: to study domestic violence against women and its effect on their children's behavior in Ismailia city. Methodology: Setting: This study was conducted in 4 primary health care centers in Ismailia city. The descriptive study design was utilized to conduct this study. Subject: include 93 married women (15: 49 years), and have at least one child aged 4: 18 years during the field of study. Tools: 1) a structured interview questionnaire covering personal characteristics of women, their husbands, social and economic status of the family, and forms of violence against women in the last 12 months. 2) Child's behavior checklist to measure behavioral and emotional problems of children. Results: The studied women exposed to various types of violence, but the majority of them exposed to psychological or emotional violence and about three-quarter of them visible to physical violence. About three-quarter of their children have behavior problems, but few of the children were on borderline of behavior problems. Conclusion: Domestic violence against women has a negative effect on their children's behavior. Recommendation: Regular meetings with parents to perform an awareness of the effect of witnessing Domestic violence on their children, to teach them how to deal with their children.