Purpose: of the study was to investigate whether aerobic exercise has a positive effect on executive function and EEG with Attention Deficit Hyperactivity Disorder (ADHD) children and provides a basic data for relieving symptom and treatment to ADHD children. Methods: Research participants were totally 44 children. The group distribution was combination of exercise and methylphenidate group (n=16), methylphenidate group(n=14), and the control group(n=14). Research subjects pre.post measurement was made equally on executive function(WCST), and brain wave(EEG). Also, exercise program was progressed 3 times a week (every 60 minutes) during totally 8 weeks. Data processing in the experimental result was used PASW-PC 18.0 statistical program. The basic test on general characteristics and psychological variables in ADHD children before exercise was carried out one-way ANOVA. Also, a change in difference according to three groups and measurement period was carried out repeated measure analysis. To correctly analyze a change by factor, the paired t-test and repeated measured one-way ANOVA were carried out. Results: The 8-week aerobic exercise participation of children with ADHD was indicated to have positive effect on a change in executive function and EEG. Also, aerobic exercise was helpful to executive function and EEG. Based upon those results, we might expect to use for relax and improvement of negative symptoms with ADHD children.