Obsessive-compulsive disorder is a neuropsychiatric disease with obsessive-compulsive symptoms. Patients often feel unable to control their compulsive ideas and behaviors, which will interfere with their daily life and work. The symptoms of obsessive-compulsive disorder include obsessive-compulsive concept and compulsive behavior, in which obsessive-compulsive concept refers to the patient's repeated unnecessary thoughts or impulses, knowing that these thoughts or behaviors are meaningless, but unable to restrain himself; Compulsive behavior refers to the behavior taken to alleviate the anxiety and discomfort caused by compulsive concept, such as repeatedly checking whether the door is closed and washing hands repeatedly. The etiology of obsessive-compulsive disorder is not completely clear at present, which may be related to genetic, physiological and psychological factors. The treatment of obsessive-compulsive disorder mainly includes drug therapy and psychotherapy, among which psychotherapy is one of the main treatment methods. Psychotherapy mainly includes cognitive behavior therapy, exposure therapy and reaction prevention. Cognitive behavioral therapy can help patients understand their obsessive-compulsive concepts and behaviors, and learn how to alleviate obsessive-compulsive symptoms by changing their thinking patterns and behaviors. Exposure therapy can help patients gradually contact and adapt to their obsessive-compulsive symptoms, thus reducing their dependence on obsessive-compulsive behavior; Reaction prevention refers to alleviating obsessive-compulsive symptoms by changing behavior, such as stopping and diverting attention in time when obsessive-compulsive behavior occurs. In short, obsessive-compulsive disorder is a disease that needs professional treatment, and patients should seek professional psychological counseling or treatment in time. At the same time, family and friends should also give patients support and understanding to help them relieve symptoms and restore health.