Waking up at night and not being able to sleep may be caused by excessive mental stress, mainly due to brain fatigue caused by vegetative nerve disorders, other diseases can also cause similar symptoms, such as cervical spondylosis, pulmonary heart disease. Suffering from cervical spondylosis, patients will be due to the herniated intervertebral discs compressed to the vertebral artery, thus causing the cranial part of the brain is in a mild ischemia, hypoxia symptoms, will cause the night waking up. If high blood pressure or pulmonary heart disease affects the normal pumping function of the heart, after waking up at night, there will be symptoms of suffocation, and some patients will cough violently because of the aggravation of the symptoms, coughing pink foamy sputum. Cranio-cerebral vascular diseases, such as cerebral ischemia and cerebral thrombosis can lead to similar symptoms, as localized thrombosis causes compression of brain tissue.