Emotional regulation plays an important role in a healthy lifestyle for children. Overweight show low levels of emotional intelligence instead of normal weight, this study aimed to assess Emotional intelligence, body image perception and body mass index in school age children. Sample: A total of 358 children (9-12) years old participated in the study. Setting: This study was conducted at four primary schools in Shebin Elkom city, Menoufia Governorate, Egypt. Tools: four tools were used for data collection. Tool one, was sociodemographic data questionnaire. Tool two, was Emotional intelligence Scale. Tool three, children's body image perception. Tool four: body mass index chart. Results: according to the study scales cut-off point. A higher proportion of the underestimation body image and overestimation body image children (69.2%;69.6%) respectively have lower emotional intelligence. also, there was statistical significance difference were found between children body mass index and emotional intelligence subscale including intrapersonal skills, interpersonal skills, adaptability, stress management, and general mood with overweight and obese children. Conclusion. Based on the current study's findings that higher emotional intelligence associated with normal weight instead of overweight and obesity, the children with high emotional intelligence encouraged adherence to healthy behaviors, which provided the foundation for weight control. Recommendations. Enhance public awareness of the detrimental impacts of obesity and provide emotional intelligence-based weight loss counseling for children, particularly those who are obese.