Psychiatric disorders are a large category of clinical disorders, such as depression, anxiety disorders, personality disorders, dysthymia, etc. Different disorders can cause patients to exhibit different mental states and behavioral behaviors. Usually, patients can be judged by clinical manifestations, specialized examinations, and scale tests: 1. Clinical manifestations: 1. Speech: such as inability to talk normally with normal people, the content of conversation is very different, the language spoken is not logical, wrong sentence breaks, and the foreword does not match the afterword, etc. It may also be manifested as regular self-talk in a quiet state, sudden high or low language, etc. 2. abnormal behavior, such as kneeling, jumping, climbing buildings, etc., or is not interested in the surrounding things, can not establish a good social relationship, if emotional anxiety, restlessness may also appear destructive or aggressive behavior, such as hitting, biting, destruction of furniture, etc.; 3, clothing: manifested as strange clothes, such as wearing clothes that do not meet the season, temperature, wearing clothes that do not match the age, gender, and even naked body out, etc. Second, the specialist examination: 1, perception: whether there will be hallucinations such as hallucinations of hearing and vision, may also appear suspicious, sensitive, timid and other psychological states, can be specifically expressed as fear of furniture, electrical appliances, dolls in the room, outdoor flowers and trees, etc., or fear of things around, think that others will persecute them; 2, thinking: unable to think normally, unable to make the correct answer to simple mathematical calculation problems, speech and demeanor No logical support, poor mental state, unable to focus on one thing; 3. Memory: assess whether the recent or distant memory of events is complete, whether there are symptoms such as forgetfulness, memory confusion or fictitious memory; 4. Emotion: can be judged according to the emotion reflected in the conversation, whether it belongs to the emotion prone to high or easily depressed, whether there is anxiety, fear, emotional indifference and other performance; 5. Orientation: whether one clearly knows one’s name, age, occupation, whether one is clear about a specific time, place, person and surroundings, and whether one has the ability to discern direction. Third, scale tests: such as Wechsler Adult Intelligence Scale, Hamilton Depression Scale, Hamilton Anxiety Scale, etc., are more widely used other assessment tools for clinical assessment, and generally the higher the score, the more severe the symptoms. The above-mentioned methods of judgment are not the criteria and basis for diagnosing whether a person is suffering from psychosis, but also to exclude the psychotic symptoms caused by physical illness, so the patient himself, or his family can accompany the patient to the psychiatric or psychological department of the hospital for professional diagnosis to confirm the diagnosis.