Obsessive-compulsive disorder (OCD) is an anxiety disorder with the appearance of
involuntarily obsessive thoughts and/or compulsive behavior characteristics. Researches on obsessivecompulsive disorder are mostly discussed from the aspects of biology, pathology, and brain dysfunction,
but there are still controversies about the psychopathological mechanism of OCD. In addition, obsessivecompulsive disorder causes great life distress and impaired social function to patients, the current
treatment options for OCD include drug therapy, psychotherapy and neurostimulation therapy. This
article aims to review the progress of research on the psychopathological mechanism of obsessivecompulsive disorder, analyze the feasibility and acceptability of existing treatment options, and lay a
theoretical foundation for comprehensive and systematic treatment of obsessive-compulsive disorder
patients.