Patients with cerebrovascular disease have sleep disorders mainly due to the following factors: 1. Cerebrovascular disease itself (1) direct effect: the lesion directly damages the sleep-wake system of the brain, the brain ischemia or hypoxia, the brain cells are damaged, and the toxic effect of the cell membrane rupture releasing a large number of amino acids and other substances causes the sleep cycle to be disturbed to varying degrees. Abnormalities of the sleep-wake cycle occur. (2) Indirect effects: cerebral edema around the lesion leads to reduced cerebral blood flow, affecting the blood supply to the cerebral cortex, hypothalamus and brainstem, causing stress reactions in sleep-related tissues and structures, resulting in disruption of the normal sleep rhythm. In addition, headache, vomiting and other discomforts caused by the pressure of cerebral vessels and increased intracranial pressure can cause excitement in the waking center and inhibition in the sleep center. 2.Psychological factors Because of the sudden onset of cerebrovascular disease, patients have negative emotions of anxiety, pessimism and self-pity about the sudden blow, which leads to insomnia. 3, somatic factors patients due to cerebrovascular disease after incontinence or combined with diabetes, prostate hypertrophy increased night urination caused by sleep disruption; the stimulation of indwelling urinary catheter; constipation diarrhea caused by abdominal distension, abdominal pain; swallowing disorder patients, increased oral secretions or less eating caused by night hunger and other discomfort, can lead to sleep difficulties at night. Patients with cerebrovascular disease due to persistent, episodic pain or numbness discomfort in paralyzed limbs also affect sleep. 4.Environmental factors Sudden change of living environment after hospitalization, unsuitable light, temperature and humidity in the hospital room; uncomfortable bed; continuous infusion or with various catheters and monitoring leads that restrict the body’s random movement also hinder sleep, or make patients wake up easily after sleep and have difficulty sleeping after waking up. 5, drug factors Some drugs can cause central nervous excitation drugs, such as: blood, thyroxine tablets, hormones, etc. can increase the excitability of the central nervous system to make patients mentally excited, resulting in sleep disorders.