Elevated blood pressure at night is commonly caused by the following reasons: 1. Patients with hypertension experience changes in the circadian rhythm of blood pressure, resulting in a situation where blood pressure is not high during the day but increases at night; 2. There are some triggers that induce elevated blood pressure, such as excessive smoking, drinking alcohol, drinking strong tea and coffee, and staying up late at night; 3. Patients with hypertension take short-acting blood pressure medications, which, due to the short duration of their effects, result in Can not effectively control the elevation of blood pressure at night. For people who have elevated blood pressure at night, it is important to identify the causes of elevated blood pressure in a timely manner, and to deal with different situations so that blood pressure can be effectively controlled in a timely manner.