The reasons for waking up with a sudden increase in blood pressure are physiological and pathological factors. 1. Physiological: most people belong to the aryl blood pressure fluctuation, that is, the morning blood pressure is the highest value of the day, if not more than the normal value of the range, is a normal phenomenon. Mental stress and over-exertion can also lead to a transient increase in blood pressure, which will return to normal after resting and stabilizing emotions. 2. Primary hypertension: If you find that your blood pressure suddenly rises when you wake up from sleep, it is recommended that you undergo 24-hour ambulatory blood pressure monitoring and monitor your blood pressure at different times for several days. If it is not the same time, and not the same day to measure three times the blood pressure value systolic blood pressure ≥ 140mmHg and/or diastolic blood pressure ≥ 90mmHg, can be diagnosed with hypertension. Patients with hypertension should seek prompt medical attention to clarify the cause of the condition and then follow the doctor’s instructions for treatment.