Sleeping at night and waking up in the middle of the night belongs to early waking and poor sleep quality, which is one of the types of sleep disorders, and its possible causes are the following: First, poor sleep environment, if the patient sleeps in a noisy environment, with bright light stimulation or stuffy air and no circulation, with abnormal odor, will lead to poor sleep quality and easy to wake up. Second, emotional abnormalities, anxiety or depression, especially depression can easily lead to early awakening and difficulty in falling asleep after waking up, while anxiety can lead to excessive dreaming, poor sleep quality, and easy waking up when there are sounds or abnormal situations. Thirdly, sleep apnea syndrome can be divided into peripheral and central. Patients with peripheral are mostly patients with collapsed structural tissues in the throat, resulting in patients not being able to breathe smoothly during sleep, producing ischemia and hypoxia, affecting sleep quality and easily waking up from suffocation. Central is a condition in which the patient’s respiratory center is insensitive to carbon dioxide and requires a higher concentration of carbon dioxide to trigger respiratory movements during sleep, resulting in patients often having central apnea.