Psychological intervention methods are the main treatment methods for OCD, and nowadays they are also very popular internationally and are the mainstream methods of OCD treatment. The main psychological intervention methods for OCD are: 1. cognitive behavioral therapy, cognitive behavioral therapy occupies a very important position in the treatment of OCD, this treatment is mainly through changing the patient’s cognition, to achieve a change in the patient’s thinking, so as to change behavior; 2. behavioral therapy, often with the patient to do a good job or list of behavioral assignments, regular homework assignments for the patient to complete on their own. Behavioral therapy is often combined with medication for combined treatment. Morita therapy used to be more popular in Japan, and patients may need to be divided into several phases according to the rhythm of Morita therapy. It is also more popular in Japan nowadays. The main purpose of the treatment is to let the patient do self-reflection and reflection, including meditation and meditation, which is relatively effective. Overall, the treatment also depends on the patient’s situation to develop different treatment plans. Compulsive behaviors such as repeated hand washing for 5 hours a day may not be recommended for orthomolecular treatment, but may be recommended for behavioral treatment.