Can not sleep at night belongs to a sleep disorder, as to which disease symptoms, need to be judged according to the number of occurrences and duration, as follows: 1, normal physiological phenomenon: If only occasionally 1-2 times can not sleep, this does not belong to the disease, but a very normal physiological situation, such as the stimulation of certain events, or emotional instability before going to bed, exertion, etc., this situation is very normal. 2, insomnia: If this situation often occurs, and lasts for a long time, may belong to insomnia, and the symptoms of insomnia are mainly sleeplessness, early awakening, and wake up after the difficulty of sleep, this situation can be self-regulation, if the regulation is poor, you can go to the hospital line for further consultation.