Hypertension is a serious threat to human health, and although the awareness and treatment rates of hypertension have increased compared to previous years, they are still less than 50% of the total number of patients. This means that nearly half of the patients are unaware of or do not treat hypertension. We found that not everyone takes standardized blood pressure measurements at home. For patients with hypertension, home blood pressure measurement is of great significance. Therefore, the “Home Blood Pressure Monitoring Guidelines Committee” of the Chinese Hypertension Alliance released the “2019 China Home Blood Pressure Monitoring Guidelines”. In fact, home blood pressure monitoring should be done for everyone, including those who consider themselves to have normal blood pressure. Having a blood pressure monitor in the home and being able to measure blood pressure can be of great significance in detecting insidious hypertension, or “white coat hypertension”. Some patients who take blood pressure medication but do not meet the standard level of blood pressure reduction are still at high risk for cardiovascular disease. Regular home blood pressure monitoring can increase the rate of attainment of antihypertensive treatment and guide further medication. Conditions for home blood pressure monitoring: If an upper-arm blood pressure monitor is used for home blood pressure monitoring, the general conditions for measuring blood pressure are roughly similar to those used when blood pressure is measured in the office. The blood pressure is measured after resting in a seated position on a chair with a backrest for at least 5 min. To measure blood pressure, place the forearm on the side of the cuff on the table with the midpoint of the upper arm of the cuff at the same level as the heart and the legs relaxed and on the floor. You may also choose a more comfortable seating condition, such as a couch with a slightly shorter seat, but make sure that the midpoint of the upper arm of the cuff is at the same level as the heart. Most electronic sphygmomanometers are equipped with a standard cuff (<32 cm upper arm circumference) that is suitable for most measurements and a large cuff (≥32 cm upper arm circumference) for those with larger upper arm circumference. If measuring blood pressure in children, adolescents, or others with small upper arms, a small cuff should be selected. Improper cuff selection results in large blood pressure errors. In the choice of sphygmomanometer, the guidelines encourage the use of an upper-arm automatic electronic sphygmomanometer, but require this sphygmomanometer to be verified for accuracy. Most of the current electronic sphygmomanometers from regular manufacturers meet the conditions. Wrist sphygmomanometers should be used with caution. Finger, mercury and barometer type sphygmomanometers are not recommended. The finger type has a large error, while the mercury type requires high auscultation and is polluting to the environment, and is clearly not recommended. Regarding the frequency of home blood pressure measurement, the guidelines recommend that: for home blood pressure monitoring, blood pressure should be measured daily in the morning and evening, and each measurement should be taken 2-3 times at 1 min intervals after 5 min of rest in a seated position. first-time patients, patients in the early stage of treatment or patients whose blood pressure has not yet reached the standard despite treatment, should be measured continuously for 5-7 d before going to the clinic; when blood pressure is well controlled, it should be measured at least 1 d per week. usually, morning Blood pressure measurements should be taken within 1 h after waking up, before taking antihypertensive drugs, before breakfast, and before strenuous activity. Considering that our population has an early dinner time, it is recommended that evening blood pressure measurements be taken after dinner and before going to bed. Both in the morning, and in the evening, care should be taken to empty the bladder before measuring blood pressure. To ensure the quality of home blood pressure monitoring, the time of waking up, time of going to bed, time of three meals and time of taking medication should be recorded during blood pressure monitoring. So what should the blood pressure be when measured within the home? This guideline recommends that the diagnosis of hypertension can be confirmed when the mean home blood pressure is ≥135/85 mmHg, or when the blood pressure is not yet controlled. When the office blood pressure is <140/90mmHg and the home blood pressure is ≥135/85mmHg, the diagnosis of "occult hypertension" or "occult uncontrolled hypertension" can be made. It is important to standardize blood pressure measurement in order to obtain more accurate blood pressure values, which can further guide the antihypertensive treatment plan and reduce the occurrence of cardiovascular and cerebrovascular diseases. We recommend that you follow the "guideline recommendations" and standardize your blood pressure measurement.