The former often results in disability, injury, or even death of the attacked person. The former often results in maiming, injury, or even death, while the latter causes economic loss of varying severity. Violent behavior is therefore a very serious emergency that must be addressed immediately, regardless of where it occurs. The relationship between clinical features and violent behavior It is often thought that violent behavior in schizophrenia occurs under the influence of hallucinations or delusions, but it is often closely related to the surrounding environment, and the frequency and type of violent wishes are related to the social environment in which the person lives. Patients with schizophrenia rarely commit violent acts against others, while violence against themselves, such as self-injury and suicide, is more common. However, mildly aggressive behaviors and language toward people and objects are more common. Wang Biao, Psychiatry Department, Shanghai Mental Health Center Most of the aggressive behaviors of patients with schizophrenia are directed at their relatives, psychiatric professionals. Occasionally, severe violence due to hallucinations and delusions is rare, but often leads to serious consequences. Some foreign data show that about 36.5-45.7% of severe violent behavior occurs under the influence of hallucinations and delusions, with delusions of victimization predominating, followed by delusions of jealousy. Schizophrenia is at greater risk for violence when combined with mental retardation, personality disorders, and substance abuse. Patients with mood disorders can become seriously violent when they are paranoid, often in the early stages of the disease, and sexual assaults are more common due to their high sexual desire and other factors. Although patients with depression are predominantly suicidal, at certain times patients often direct their anger externally in order to seek external punishment. These patients may kill themselves by attacking others or by killing. Or they may extend the killing. Although violent behavior is uncommon in patients with temporal lobe epilepsy, violent behavior is seen during seizures, but these behaviors are often purposeless, and in patients with associated disorders of consciousness or personality changes sometimes their violent behavior is often brutal and fatal. Personality disorders, especially antisocial and borderline personality disorders, are often associated with antisocial behavior along with aggressive violence. Patients often feel no guilt or responsibility for their actions. When intoxicated, patients are often in a so-called disinhibited state and are prone to violence due to emotional instability and impaired judgment. The patient is prone to violence due to unstable mood and impaired judgment. The patient is often violent when he/she is provoked by drug use, hallucinating and seeking the opportunity to use. The principle of treatment is early control and immediate differentiation of different types of violence. Anti-psychotic drugs can be used for psychotic violence with appropriate protection, while anti-epileptic drugs such as carbamazepine can be used for other disorders, and lithium or beta-blockers can be used for people with mental retardation. Electroconvulsive therapy may be used when necessary.