The purpose of this study was to investigate the impact of a hand- clapping method on increasing adaptive behaviors, self-control, interaction, attention; decreasing abnormal behaviors, and participating in the learning activites of student with autism. Subject, a 14-year-old low functioning autistic student with seriously self-injured behaviors, was placed in a junior high school for mental retardation when this study was carried out. Training package included hand-clapping activity, self-control on inadequate behaviors. The training was practiced 40 minutes a day, once a week, for 16 weeks. Apart from systematic recording for daily monitoring, Adaptive Behavior Scale was used to collect the data. Results indicated that hand-clapping method has impact on the adaptive behaviors: increasing self-control, improving interpersonal relationship, and decreasing abnormal behaviors.