Acute stress disorder, also known as acute stress reaction, is a condition in which a sharp, severe psychological shock is the direct cause and the patient develops immediately (within 1 hour) after the stimulus, showing psychomotor excitement with intense fearful experiences, some blindness in behavior, or psychomotor depression, or even mute. If the source of stress is eliminated, symptoms tend to be short-lived, with a good prognosis and complete remission. The emergence and severity of acute stress disorder are closely related to the individual’s psychological quality, coping style, and physical health status at the time. The initial stage of presentation is the “daze” stage, characterized by confusion, narrowed attention, decreased clarity of consciousness, orientation difficulties, and inability to heed external stimuli; subsequently, patients can develop a variety of symptoms, including confusion about the surrounding environment, agitation, anger, fearful anxiety, depression, despair, and autonomic nervous system symptoms, such as tachycardia, tremor, sweating, and flushing. Sometimes, patients are unable to recall stressful events. These symptoms often begin to diminish after 24 to 48 hours and usually last no more than 3 days. If the symptoms persist for more than 4 weeks, a diagnosis of “post-traumatic stress disorder” should be considered. There is another clinical subtype of acute stress disorder called “acute stress psychosis”, which is a psychotic disorder directly caused by a traumatic event that is intense and lasts for a certain period of time. Delusions and severe affective disorders are predominant, and the content of the symptoms is closely related to the source of stress and is easily understood. And less related to personal quality factors. The duration of the illness is also generally less than 1 month.