Heavy mental disorders include six types: 1, schizophrenia; 2, bipolar disorder; 3, paranoid mental disorder; 4, mental retardation with psychotic disorder; 5, psychotic disorder due to epilepsy; and 6, schizoaffective mental disorder. These are the six major heavy mental disorders specified in the Mental Health Law of the People’s Republic of China. Schizophrenia is a mental illness in which the individual’s perception, thinking, emotion and volitional behavior are impaired in many ways. Patients mainly manifest hallucinations, delusions, disorders of speech, withdrawal with behavior and disorders of behavior. Patients generally talk to themselves, suspect others of harming them, exaggerate themselves, behave very chaotically, speak east to west, incoherently and without knowing what is going on, which is characteristic of schizophrenia; bipolar disorder is very strong mood swings, sometimes manic, thinking that they are not capable of talking too much in excitement. Sometimes episodes of depression, depressed mood, life is worse than death; paranoid psychosis is mainly paranoid that someone is harming him, or paranoid that he has special skills; mental disorder due to epilepsy is a mental disorder that is complicated by epilepsy; mental retardation with mental disorder is a disorder based on poor intellectual development, accompanied by issuance.