There are several possible reasons for hypertensive patients to sleep: 1. Patients with poor blood pressure control, making blood pressure too high or too low, patients may have cerebral ischemia, hypoxia. 2. Patients with sleep apnea syndrome, so that the patient’s body in a state of hypoxia, long-term persistence will aggravate the condition. 3. Patients may have hypoglycemia, hypoglycemia can also make patients always want to sleep. Patients with hypertension should consult a regular hospital if they are sleepy, and be given routine blood tests, blood sugar, blood lipids, blood uric acid, liver and kidney function, blood gas analysis and cardiac ultrasound, and 24h sleep apnea monitoring to identify the causes.