Patients at night just can not sleep belongs to the sleep disorder, the causes mainly include the following aspects: 1, in the clinical is also the most common, and the patient’s mental, psychological factors have a relationship, many people when emotional tension, mental stress is relatively large when there will be difficulty in sleeping, there is also the patient is more anxious, depressed, also prone to sleep difficulties. 2, can not sleep at night may be related to the patient The patient may not be able to sleep at night is also related to physiological factors, such as menopausal women, when the body hormone secretion disorder will appear difficulty in sleeping.