Effective treatments for OCD include medication and psychotherapy, as follows: 1. Medication: Medication is one of the main treatments for OCD. Medication requires a full course of treatment, including three treatment phases: the acute phase, the consolidation phase and the maintenance phase. Medication is generally selected from first-line drugs, referring to selective 5-hydroxytryptamine reuptake inhibitors, which are also called SSRIs, such as fluoxetine, fluvoxamine, sertraline, paroxetine, citalopram, and medication requires a full dose and a full course of treatment; 2. Psychotherapy: The onset of OCD is often closely related to the patient’s personality, personal life experiences, psychosocial factors and trauma. It is often difficult to achieve satisfactory results with medication alone, so it is necessary to supplement psychotherapy on top of medication. Currently, the main psychological treatments for OCD include behavioral therapy, psychoanalysis, cognitive therapy, cognitive behavioral therapy, Morita therapy and supportive psychotherapy. Like medication, the effect of psychotherapy is not immediate and requires a long-term process. 3. Physical therapy: For example, transcranial magnetic stimulation, modified electroconvulsive therapy, deep brain stimulation, vagus nerve stimulation, etc. However, the efficacy of physical therapy methods is not exact, so physical therapy is not recommended as the main treatment method. For most patients with OCD, medication and psychotherapy, either concurrently or sequentially, are advocated as more effective than any treatment alone.