Background; neuro-behavioral illness is the most common in both children and adolescents. It is characterised by carelessness and hyperactivity, which often cause behavioural and academic difficulties. It affects 3-12% of newborns with a male/female ratio of 3:1 to 9:1. Objectives and objectives; to evaluate the prevalence of ADHD in pre-school Governorate Al-Qalyubiya children; Themes and technology; This is a transversal study conducted in the governorate of Al-Qalyubiya with 1345 pre-school children. Field work was carried out throughout the first half of 2020, Results; ADHD subtypes and sex have had a significantly higher connection than ADHD-C and ADHD-HI in children than girls and ADHD-I subtypes in women compared to boys; Conclusion; ADHD is a major problem that young people between the ages of 3 and 6 frequently suffer from. Early detection and parenting programmes should be developed to enhance parental skills in the control of their child's behaviour.