Background: Exposure to electronic media is one of the most common sedentary behaviors among preschool children. Too much screen viewing associated with many negative impacts on children’s behaviors. Aim of the study: The aim of the present study was to assess the effect of excessive electronic media exposure in developing behavior problems among preschool children. Subjects and Methods: Research design: A prospective descriptive research design was used to accomplish the aim of the present study. Setting: The present study was conducted at four governmental nursery schools in Zagazig city. Subjects: 160 mothers of preschool children were selected by using a multistage cluster sampling technique. Tools of data collection: Data were collected by using an interview questionnaire sheet composed of three parts: Sociodemographic data, Excessive electronic media exposure questionnaire, and Strengths and difficulties questionnaire (SDQ). Results: The study results revealed that there was a statistically significant negative correlation between SDQ positive and child exposure hours to media. Additionally, regarding emotional problems domain there was a statistically significant difference was found between first and second measurement of scores of SDQ. Furthermore, female child and income were a statistically significant independent positive predictors of SDQ positive score. While, father education, watching media associated with certain action and No. of media, were a statistically significant independent negative predictor of SDQ positive score. Conclusion: The study concluded that increasing hours of daily exposure to media accompanied with behavior problems among preschool children. Recommendations: it is recommended that Health education programs for parents about the negative effects of excessive exposure to electronic media on behaviors of preschool children.