Good sleep is an important physiological basis for people's physical and mental health. Poor sleep suggests that there may be psychological or physiological problems, which is a warning signal for human health. "The symptom of 'waking up early' is quite special. It is not only one of the common manifestations of insomnia, but also one of the important indicators for judging depression." Dong Ping, chief physician of the sleep medicine department of the Sixth Hospital of Peking University, said in an interview with the people's Daily that many people understand insomnia as being unable to sleep. In fact, waking up early and waking up frequently at night are all manifestations of insomnia. "In sleep medicine, waking up early means waking up more than half an hour earlier than usual, and you can't go to sleep after waking up. If you get up at 2:00 in the middle of the night and go to the toilet, and then come back to sleep quickly, you won't be called to wake up early. Early waking up may be caused by various external factors, such as drinking, changes in the sleep environment, changes in seasons and climate, stressful events, and physical diseases." Dr. Dong Ping said. So, what kind of early awakening should be vigilant about depression? According to Dr. Dong Ping, the first thing to do is to look at the early wake-up time. The wake-up time was at least 2 hours earlier than the previous normal wake-up time, and the above external factors were excluded. Second, look at the mood during the day. They are depressed, pessimistic and depressed, unable to enjoy anything, and even have the idea of suicide. The third is to see the impact on daily functions. They are exhausted, inattentive, inefficient in study and work, unwilling to communicate with others, and even bedridden all day. If the above situation persists for more than 2 weeks, you should be highly alert to the occurrence of depression, seek medical treatment as soon as possible, and seek the help of professional doctors. (outlook new era)