Self-knowledge refers to the patient’s ability to recognize his or her psychiatric state, i.e., whether he or she is aware of abnormalities in his or her mental state and whether he or she can correctly analyze and judge his or her abnormal performance. The self-knowledge of schizophrenic patients is incomplete, while that of neurotic patients is mostly present. The gradual recovery of self-knowledge in psychiatric patients is one of the main indications of the tendency of the disease to remission. The correct recognition of one’s psychopathic state is called “self-knowledge”, the belief that one’s psychopathic state is not pathological is called “no self-knowledge”, and the in-between is “partial self-knowledge In between is “partial self-knowledge”. There are four criteria to determine whether there is self-awareness: 1. The patient is aware of the appearance of phenomena that others consider abnormal. For example, when others talk about their own nonsense, the patient can be aware of this situation. 2. The patient himself recognizes that these phenomena are abnormal. Although the patient is able to be aware of his or her situation, at the same time, he or she should realize that this situation is different from the previous one and know that it is abnormal. 3. The patient recognizes that these abnormalities are the result of his or her own mental illness. Some patients simply believe that these abnormalities are caused by hypertension or other physical illnesses and do not believe that they are due to mental illness. 4. The patient realizes that treatment is necessary. Although they recognize their abnormalities and know that they are caused by mental illness, they do not want to go for treatment.