Attention-deficit hyperactivity disorder (ADHD), has harmful effect on education and relationship with parents, teachers and the others. The aim of this research was to study the simultaneous effects of intervention strategies in reduce the impulsive type of ADHD’s symptoms. The research is based Multiple baseline experimental single case study in sixteen weekly session using on a high school boy student with mental retardation. The data is collected with clinical interview using diagnostic criteria for attention-deficit hyperactivity disorder (DSM-IV TR), Conners teacher rating scale form (1969), parent form (1999). It is analyzed based on improvement percentage and reliable change index (RCI). Consequences showed that the effects of intervention strategies in reduction of impulsivity are meaningful in clinical aspects. Simultaneous effects of intervention strategies in reduction of impulsivity are efficient and effective.