Treatment of anxiety, depression and OCD is basically the same, with mild psychological adjustment and relaxation therapy; above moderate medication and psychotherapy are applied simultaneously. Pharmacological treatment with antidepressants. The systematic and regular medication for anxiety, depression and obsessive-compulsive disorder starts with a small dose and is gradually increased to the dose that the doctor thinks is therapeutic according to the severity of the disease and the doctor’s own experience during the period of 2-4 weeks of taking the therapeutic dose. The symptoms disappear after 1-3 months of treatment, and some of them take 3-6 months to disappear, and a few of them take 6-12 months to disappear after the symptoms are stubborn. In this stage, there is a small amount of drug reduction, a small number of symptoms can not be controlled need to increase the dose; in the consolidation stage has been maintained with the same as normal, it is time to enter the maintenance treatment, maintenance treatment stage doctors according to each assessment, generally 3-6 months to reduce the dosage of drugs, the first onset of adolescents and the general population in about a year to reduce to stop, the second onset of more than and older patients generally in about two years to reduce to stop the drug In older patients, the medication will be discontinued in about three years or long-term medication. In some cases of severe depression, antipsychotic medications should be combined in small doses and for a short period of time. There are many types of antidepressant drugs, and the traditional antidepressant drugs have a greater side effect, while the newer antidepressant drugs have a smaller sedative effect, with little variability in their therapeutic effects. Each drug has a focus on the treatment of symptoms, some favor the treatment of anxiety, some favor the treatment of depression mood, some are good for the treatment of obsessive-compulsive disorder, the treatment of obsessive-compulsive disorder clinical medication is generally much larger than the amount of antidepressants. Often when people get well, they tend to stop taking the medication early, resulting in a quick relapse or a rebound after stopping the medication. After relapse, the dose of medication for the acute and consolidation periods is larger than the previous one, and the time for symptom relief is more than double the time needed for the previous one, the overall treatment cost is greater, and the overall treatment time is longer. Receiving systematic and regular treatment can reduce relapses, reduce medical costs and reduce patient suffering.