Trance is mainly a difficulty in concentration, manifesting itself as delirium or confusion, describing a kind of confusion. The main causes are higher stress, occurrence of emergency events, and mental illness, as follows: First, higher stress or stressful events: when stress is relatively high, many people have decreased attention, slow thinking or tend to wander off, common reasons such as facing the pressure of exams, or interpersonal tension, there are also some people may have to face a major social event such as marriage or divorce, there are also some people who have suffered a separation of relatives. People facing such major stressful events may not be able to concentrate and act in a trance. Second, mental illness: common causes include depression, anxiety, insomnia, and neurasthenia. Depression and anxiety disorders can impair a person’s attention, so that the speed of thinking is impaired, which may decrease attention, slower brain thinking, inability to focus on problems, memory loss, which at this time gives people the feeling as if they are absent-minded, attention is always diffuse, unable to focus on things, work efficiency decreases, and even in severe cases, a state of trance, which requires timely intervention This requires timely intervention.