Geriatric psychosis is an umbrella term for many psychiatric disorders. It includes a variety of psychiatric disorders such as schizophrenia, mood disorders, and organic psychosis. The manifestations are diverse and can be summarized into general and specific manifestations, which are described below. They are described below. 1, the general manifestations of psychosis in old age: many studies have shown that before the onset of mental illness, there are often some prodromal symptoms, which are often vague and variable, elusive, and not specific for the diagnosis of a particular psychosis, as follows: (1) personality and behavior changes: becoming withdrawn, reluctant to interact with colleagues and friends, reduced social activities, silence, treating people coldly, lack of affection, initiative (1) Changes in personality and behavior: becoming withdrawn, reluctant to interact with colleagues and friends, less social activities, silent, less talkative, cold, lack of affection, less initiative, less attention to appearance, lazy life, unexplained truancy, absenteeism, etc. (2) Emotional changes: easy to lose temper for no reason, easy to fight with others, nervousness for no reason, worry and fear, irritability for no reason, restlessness, emotional instability, easy to feel sad, easy to cry, depressed, pessimistic, depressed, etc. (3) Cognitive changes: decreased memory, difficulty in concentration, decreased learning efficiency, strange thoughts appear in the mind for no reason, feeling that thinking becomes sluggish or racing, sensitive and suspicious, unwarranted suspicion, increased alertness, etc. (4) Somatic changes: sleep disorders, difficulty in falling asleep, early awakening, excessive dreaming, reversal of sleep pattern day and night, various physical discomforts, such as headache and dizziness, loss of appetite, etc. Family members should pay special attention to these symptoms, monitor them closely, and consult with a psychiatrist or psychiatrist regularly to avoid delays in diagnosis and treatment. (2) Special symptoms of psychosis in old age: These symptoms are of great value in diagnosing psychosis, specifically: (1) psychotic symptoms, including: (1) hallucinations: a kind of illusory perception, i.e., things or stimuli that do not exist in fact, but are perceived by the patient but not by others, such as “seeing” a dead person, “smelling” a strange person, or “seeing” a dead person. The manifestations include “seeing” a dead person, “smelling” an odor, “hearing” voices talking and so on. ②Delusion: is a pathological belief, is based on the pathological basis of the distorted reasoning and judgment of external things, such as the patient for no reason convinced that someone using some means to frame him, causing him physical discomfort, the purpose is to kill him, this is the delusion of victimization. Delusions can be divided into delusions of relationship, delusions of victimization, delusions of jealousy, and delusions of exaggeration according to the content of delusions. (3) Aggressive and violent behavior. (2) Lack of initiative, thought association disorder: the performance of the conversation when the east and west, writing without a theme, making it difficult to communicate effectively. (3) Mood disorders: when depressed, pessimistic and despairing, may be accompanied by early awakening, fatigue, loss of appetite; when happy, excited and talkative, nosy, temperamental, etc. (4) Anxiety: It is an emotional experience of nervousness and fear, often accompanied by panic, shortness of breath, sweating and other symptoms of plant nerve dysfunction. (5) Loss of self-knowledge: It means that the patient has self-knowledge of the disease and symptoms and takes the initiative to seek medical treatment. For example, a patient who goes to the doctor for headache is a manifestation of self-knowledge, while psychiatric patients often lose their self-knowledge, do not admit that they are sick and refuse to see the doctor for medication. The above symptoms are of great value in identifying psychosis, and once they persist, they should be actively diagnosed and treated.