Abstract: ObjectiveTo explore the difference of reaction time in different subty pes ADHD children,providing science guidance for the clinical treatment.Methods170 cases ADHD children were divided into different subtypes according to DSM-IV standard of diagnoses for the doctor,using the computer reaction time test system to assess the visual and auditory reaction time in different subtypes ADHD children.ResultsThe visual and auditory reaction time of different subtypes ADHD children had obiviously differences(P<0.05 or P<0.01),herein to reaction time of HIchildren (348.45±68.88) ms was the furthest soon;visual,auditory reaction time was (482.55±76.80)ms,(297.94±70.42)ms respectively reaction time of CT children was the furthest slow,and the errors rate of reaction time was the furthesthigh.ConclusionThe clinical dorctor should set down a treatment precept bases to the neuropsychological characteristics in different subtypes ADHD children.