Patients in recent days suddenly insomnia, the reason is mainly to consider the following aspects: 1, to pay attention to whether the patient is emotionally suffered a sudden blow, or stimulation and caused by this in the clinical is more common, many people suddenly suffered emotional trauma, or shock, stimulation of the situation, easy to insomnia. 2, patients in recent days suddenly insomnia, to pay attention to whether it is due to the Sleep environment change and cause, under normal circumstances many people will have this kind of bed behavior, when the sudden change of the sleep environment will appear sleep disorder. 3, the patient in recent days suddenly insomnia, may also have a relationship with the patient’s psycho-psychological factors, such as the patient stay up late, lack of sleep or inappropriate lifestyle, before going to bed to drink strong tea, strong coffee, resulting in sleep disorders.