Home blood pressure monitoring requires the selection of appropriate blood pressure measurement instruments and training in blood pressure measurement knowledge and skills: 1. Use a validated upper-arm fully automatic or semi-automatic electronic blood pressure monitor. 2, Home blood pressure values are generally lower than office blood pressure values, and the diagnostic criteria for hypertension is 135/85 mmHg, which corresponds to 140/90 mmHg for office blood pressure. 3.Measurement program: In general, it is recommended to measure blood pressure every morning and evening, 2-3 times each time, and take the average value; for those with stable blood pressure control, blood pressure can be measured 1 day a week. For patients with hypertension or unstable blood pressure who are first diagnosed with hypertension, it is recommended to measure blood pressure at home for 7 consecutive days (at least 3 days), once a day in the morning and once in the evening, each measurement 2-3 times, and take the average value of blood pressure for the last 6 days as a reference value. 4.Home blood pressure is suitable for: blood pressure monitoring in general hypertensive patients; identification of white coat hypertension; identification of refractory hypertension; evaluation of blood pressure fluctuations; evaluation of adjunctive antihypertensive efficacy; prediction of cardiovascular risk and prognosis, etc. 5. It is advisable to record the date and time of each blood pressure measurement and all blood pressure readings in detail, rather than just the average. A complete blood pressure record should be provided to the physician whenever possible. 6.Home blood pressure monitoring is a feasible way to observe long-term blood pressure changes over days, weeks or even months and years. 7. Self-measurement of blood pressure is not recommended for people who are highly stressed.