Can not sleep at night is generally refers to the difficulty of falling asleep, mostly due to excessive rest during the day, excessive excitement, overwork or strenuous exercise before bedtime, as well as too much dinner, you can properly drink some warm milk for relief, generally without special treatment. If you can not sleep at night for a long time, belongs to the sleep disorder, should promptly seek medical treatment: a. Physiological factors: 1, causes: age factors, physical factors, environmental dietary factors and psycho-psychological factors, etc., the elderly with age, can have difficulty falling asleep, excessive fatigue, strenuous exercise, etc., will lead to continuous cortical nerve excitement, unable to sleep; by the environment, diet and other influences can also lead to insomnia at night, such as Uncomfortable bedding, excessive environmental noise, too bright light, drinking too much alcohol, coffee, strong tea, resulting in continuous nerve excitement, etc.; in addition, emotional tension, too much thought, excessive excitement, etc. can cause the brain to continue to work, thus causing difficulty sleeping, generally do not need to deal with; 2, measures: a hot bath before bedtime, can relax the body, expand blood vessels, you can also drink a glass of hot milk before bedtime, help sleep; sleep Try not to use electronic products and work, etc., can be appropriate to listen to some soothing music to relieve nervous pressure; bedroom to maintain a dark state, the use of cotton, comfortable bed supplies, do not place other sundries, to ensure a comfortable sleep environment, help sleep; to ensure that the daily routine, but not too much alcohol, coffee, etc., but also appropriate exercise to promote sleep. Second, pathological factors: 1, the cause: if psychosomatic factors lead to the aggravation of insomnia symptoms, triggering depression, anxiety and other psychological disorders, patients can appear long-term insomnia; organism organic disease causing physical pain can also lead to insomnia, such as brain tumors cause headaches, etc.; 2, measures: if long-term sleep difficulties, need to consider sleep disorders, it is recommended to seek medical psychology, psychiatry, through drugs and other treatment to intervene. Avoid aggravating symptoms and affecting the health of the organism. If the sleep disorder is caused by the primary disease, it is also necessary to actively treat the primary disease, insomnia symptoms can be improved after the primary disease control. Third, other factors: some drugs can make the nerve excitation, such as methylphenidate, pemoline, etc., improperly taken may lead to insomnia, then need to stop the drug in time, can improve the symptoms.