The patient is in REM sleep, which is a normal state when a person is in the sleep state. The main features of REM sleep are rapid eye movements, active cerebral cortex, realistic dreams, paralysis of skeletal muscles and occasional muscle twitching. A network of signaling pathways in the brainstem, forebrain, and hypothalamus plays an important role in the generation and regulation of REM sleep. When a patient shows signs such as eye movements during sleep, it indicates that the patient is in a period of REM sleep. In addition to paying attention to the proportion and duration of REM sleep in the whole sleep cycle, normal people also need to pay attention to REM sleep disorder, which is mainly manifested by the disappearance of normal muscle relaxation phenomenon during sleep, resulting in involuntary movement in sleep, which may cause injury to themselves or their bedmates. Patients need to pay attention to whether there is difficulty in falling asleep, difficulty in maintaining sleep, early awakening, daytime sleepiness and other manifestations during daily sleep, and if there is a serious sleep-wake disorder, it is necessary to go to the hospital in time for medical treatment.