Hypertension is a chronic disease that is an invisible killer that destroys the heart, brain, kidneys and other organs, and should be taken seriously once diagnosed. However, many hypertensive patients do not have a clear grasp of their blood pressure fluctuations, and some patients do not care about their blood pressure because there are no obvious symptoms or no complications for the time being, so there is nothing to do in terms of treatment, which leads to further deterioration of hypertension or other more serious diseases, these phenomena are not uncommon. The current diagnostic criteria for hypertension in adults in China are: systolic blood pressure ≥ 140 mmHg and (or) diastolic blood pressure ≥ 90 mmHg. primary hypertension although there is no cure, but hypertension on the heart, brain and kidney damage is often highly closely related to blood pressure, while large-scale clinical trials have proved that antihypertensive treatment can reduce the incidence of cardiovascular and cerebrovascular disease and mortality in patients with hypertension, so Taking effective therapeutic measures to lower blood pressure and achieve the target value (blood pressure ≤ 140/90 mmHg) is the hard truth. Blood pressure is susceptible to fluctuations due to a variety of factors such as environment, activity, emotion and irregular medication. Therefore, hypertensive patients should frequently self-measure their blood pressure at home to keep it below 140/90mmHg as much as possible. According to the survey, the current rate of self-measurement at home for Chinese hypertensive patients is very low, only less than 7% can adhere to daily blood pressure measurement, more than 40% of patients only measure blood pressure when symptoms such as dizziness and headache occur, and 3.1% of patients even measure blood pressure only once every six months, and these often cause delays and serious consequences. Regular home self-measurement of blood pressure is a very reliable and practical way for patients with hypertension to understand their blood pressure levels, and it is also an effective measure to smoothly control hypertension and prevent cardiovascular diseases. By measuring blood pressure several times a day at different times of the day according to the patient’s needs, the dynamic changes in blood pressure in daily life can be understood; patients can truly feel the positive effects of taking medication, salt restriction, alcohol cessation, weight loss and other means on blood pressure control, and correct the bad habits of taking medication irregularly and not paying attention to non-pharmaceutical treatment. At the same time, it can improve patient awareness and confidence in controlling the disease, improve control and reduce the cost of treatment. Therefore, it is recommended that families with hypertensive patients choose to purchase electronic blood pressure monitors or mercury blood pressure monitors that meet international standards, have high accuracy and convenience, so that they can accurately understand blood pressure changes in various states even without the help of a doctor, grasp the efficacy of antihypertensive drugs, bring blood pressure up to standard and reduce cardiovascular and cerebrovascular morbidity.