Very sleepy but can not sleep for the following reasons; 1, generally due to patients stay up late for a long time, resulting in their biological clock disorder caused by a phenomenon; 2, may be due to the patient has stayed up past the point of sleepiness, the patient’s body has adapted to this exertion, caused by a symptom; 3, may be due to the patient’s mental stress, mental tension, anxiety, excessive pressure, etc. caused by the situation; 4, may be due to the patient’s own cerebral cortex is too excited or has been thinking about something too much; 5, may be due to the patient’s own sleep disorder. It may be caused by the patient’s brain cortex being too excited, or by something being on his mind all the time, resulting in too many thoughts; 5, it may be due to the patient’s own sleep disorder. Patients should first be examined to confirm the cause and then treat the symptoms. In daily life, physical exercise can be done to relieve stress, and if the symptoms of insomnia are serious, sleeping pills can be taken to help treat it.