The purpose of this study is to predict the character of target behavior with developmental disabilities, to apply actively a behavior management and educational Support. This study illustrated the investigation for frequency of target behavior, analysis into thd pattern of behavior for sex distinction and an age bracket through Internet Service for Family Supportive Program. The results of the study show as follows. First, it is found that the target behavior in the study belongs almost to the field of behavior(e.g., self-stimulatory behavior, self-injurious, yelling, crying, self-manage, tantrum). Also, it was found out the specific gravity of target behavior shows the field of sleeping and excretion is related to the fundamental and biological daily living. Second, the result of target behavior analysis according to sex distinction showed extraordinarily occurred in male than in female in the field of behavior. Third, the result of target behavior analysis according to an age bracket showed children above eight year by age than other occurred high-frequency in the field of behavior and aggression.