Attention deficit hyperactivity disorder (ADHD) is one of the most common neurobehavioral disorders of childhood but may continue into the adult years. The most common treatment is using stimulant medications and the role of Environmental factors is ignored. The purpose of this survey is studding the effect of Physical environment factors on ADHD disorder symptoms in children (6-10 years). Therefore with a semi-experimental study in one of the consulting centers in Tehran, 30 subjects were selected randomly and assigned into the experimental and control groups (15 subjects each). At first pre-test was performed by Conner’s Parent Rating Scale (CPRS-48) and after that some changes were made at control group’s houses physical environment with recommendations to parents. About 8 weeks later post-test was performed for the experimental and control groups and ANCOVA were used to analyze the data. Based on the results obtained, it can be stated that suitable spaces, using natural daylight, creating visual and aural communication with the outdoor spaces and also connection with green and open space and performing targeted playing in the open space are effective on decreasing the symptoms of ADHD disorder in control group. According to significant difference between experimental and control groups it can be stated that principled housing architectural design and taking spaces quality beside quantity into consider, may help decreasing the symptoms of ADHD disorder in children.