Most of the patients in neurology are elderly, and many of them have hypertension. In my outpatient experience, I often encounter patients’ doubts and complaints about blood pressure measurement, some of them say, “Doctor, please take my blood pressure, my electronic blood pressure monitor at home is not accurate at all! Some patients say, “My blood pressure is usually very good, I often go to the health center to measure it! Some patients say, “My blood pressure is usually very good, I often go to the health center to measure it!”, but when asked, it turns out that once a month is the norm, and once a week is already considered very diligent. Although hypertension is an internal disease and cardiovascular physicians may have a more specialized knowledge of it than I do, I spend a lot of time in each clinic to educate patients about hypertension, to spread correct knowledge about hypertension and to correct patients’ misconceptions, considering that it is an important risk factor for neurological diseases such as cerebral hemorrhage and cerebral infarction, and that controlling blood pressure is an important part of secondary prevention of stroke. I spend a lot of time in each clinic to educate patients about hypertension and correct their misconceptions. In response to patients’ various questions about hypertension, I would like to first ask the majority of patients: Do you really know how to measure blood pressure? There are strict requirements for the proper measurement of blood pressure. Blood pressure measurement is not like a “trip”, it’s not just a matter of stretching out your arm and tying a cuff, and the value you get is as correct as the golden rule. In the familiar song of square dancers – “Blood pressure is not something you want to measure, you can measure it if you want to” So, how exactly should you take your blood pressure correctly? What are the esoteric details of blood pressure measurement? Is the electronic blood pressure monitor accurate or not? Don’t worry, and listen to me to tell you one by one. As long as you do the following requirements, then the blood pressure you measured is really a more accurate blood pressure with reference to the meaning. First of all, it is important to state that blood pressure measurement is not only based on a single measurement, because human blood pressure changes all the time during the day, and a single measurement can only be used as a reference. Even the diagnosis of hypertension requires two or more blood pressure levels above 140/90 mmHg on different days before a diagnosis can be made. The main thing we need to look at when measuring blood pressure is the overall trend of blood pressure, the fluctuation of blood pressure over a period of time. Requirements for proper blood pressure measurement: 1. Use the same arm (preferably the right arm) at the same time every day, in the same position for blood pressure measurement; 2. Dress requirements: upper arm should be bare or only wear a thin shirt, not through a sweater, jacket and other very thick clothing measurement, and do not roll up the cuffs; 3. (The air conditioner should be turned on during the season to ensure that the room temperature is appropriate). The height of the table and chairs should be appropriate (the ideal height difference is 25-30cm), in order to facilitate the body to maintain a natural straight state, to avoid inaccurate measurement; 4, the number of requirements: twice a day, and simple record, write blood pressure diary (such as “December 25 120/80; 130/75” can be), each visit to bring your 5. Time requirement: after waking up in the morning (after brushing teeth, washing face, going to the toilet, before eating breakfast and taking medication) and before going to bed at night, rest for 5-10 minutes in a quiet state; 6. Posture requirement: supine or sitting position. Sitting requirements: in a reclining chair in a natural, upright, comfortable sitting posture (straight back, the body does not lean forward, no pressure on the abdomen), palms up flat arm, elbow at the level of the heart, upper limb arm and body at an angle of about 45 °; 7, sphygmomanometer requirements: regular pharmacy to buy the upper arm type electronic sphygmomanometer can, their own home measurement is not recommended wrist, watch type electronic sphygmomanometer and traditional mercury column type desktop Sphygmomanometer; 8, cuff binding requirements: the center of the cuff and the heart to maintain the same height. The inflatable skin tube in the center of the cuff is aligned with the middle of the elbow fossa (brachial artery surface), and the distance between the lower edge of the cuff and the elbow fossa is about 2-3 cm, wrapped around the upper arm close to the skin, but should not be too tight or too loose, to be able to put in 1-2 fingers; 9, the measurement process requirements: the cuff is inflated and tightened, please stay relaxed, before the display of the measurement results, maintain a quiet state, the body, especially the arm do not move, do not talk. Other factors that may affect the accuracy of blood pressure measurement: 1. Smoking, drinking coffee, beer and other stimulating drinks within 30 minutes before measurement; 2. Stressful conditions such as a full bladder, nervousness, noisy environment; 3. People suffering from serious diseases, arrhythmia, circulatory disorders, weak pulse; 4. The cuff is wound too loosely, talking or movement during the measurement, unnatural posture, the position of the center of the cuff is lower or higher than the height of the heart.