Delusions are one of the common symptoms of psychosis. Delusions are mostly seen in schizophrenia, but of course in paranoid disorders and other psychiatric disorders. When patients have symptoms of delusions, treatment options are mainly based on medication, currently mainly second-generation atypical antipsychotic drugs. The choice of antipsychotic medication is also based on the patient’s blood pressure, blood sugar, and other psychiatric symptoms. For the first generation typical antipsychotics, there are fewer choices in clinical treatment of delusions because they have more adverse drug reactions and pose a greater risk to the patient. Of course, if the patient’s delusions are more abundant and have a greater impact on the patient, causing the patient to behave severely impulsive and agitated, or to commit suicide or self-injury, non-convulsive electroconvulsive therapy can also be chosen.