This research aims to find out the effect of behavioral cognitive therapy on obsessive-compulsive disorder and how effective this therapy is for patients with compulsive obsessive disorders. This research method used an experimental research design with a single case. A questionnaire was used as a data collection technique. The results of this study indicated that behavioral cognitive therapy could overcome obsessive-compulsive disorder. The therapeutic techniques in cognitive therapy of behavior could provide changes in the obsessive-compulsive symptoms experienced by the subjects.