The identification of mental illness is divided into two types: judicial identification and medical identification: 1. Medical identification is due to the patient’s application to the specialist hospital through the proper medical procedures, and the specialist hospital organizes specialized experts to carry out a common identification. 2. Judicial identification is carried out by a special forensic psychiatric department appointed by the court, and a specialized professional psychiatric hospital for professional identification. Both types of appraisals are conducted by professional doctors to determine whether a person has a mental illness, mainly through symptomatology, through psychological assessment of the patient to see whether the patient has psychotic symptoms, and then through psychiatric examination by professional doctors to see whether the patient has hallucinations, delusions, or whether there is impairment of social functioning, and whether there are obvious psychotic symptoms during the onset of the illness. Through the above, it is possible to determine whether a person has a possible mental illness.