The best time to take your blood pressure is in the morning before you get up for breakfast. In the case of patients taking antihypertensive medication, blood pressure should be measured before taking the medication. Those who are first diagnosed with hypertension or initial home blood pressure measurement should take 2-3 measurements once a day from 6:00-9:00 a.m. and 18:00-21:00 p.m. Each measurement should be taken for 7 consecutive days of self-measurement, with the blood pressure removed on the first day and the average blood pressure calculated for the next 6 days as a reference for evaluating treatment. It is recommended that measurements are best taken when the body and mood are in a stable state. It is best to self-measure sitting blood pressure at a fixed time in the morning after waking up, before taking antihypertensive medication and breakfast, and after urination. For evening measurements, it is sufficient to measure before going to bed. If you need to adjust your blood pressure, it is more beneficial to add a blood pressure measurement during the noon time period to reflect the changes in blood pressure throughout the day. Also note that blood pressure should be measured in an appropriate space, appropriate temperature, quiet environment, and without noise. No coffee or alcohol and no strenuous exercise within 30 minutes before the blood pressure measurement. If you take your blood pressure after a meal, it is recommended that you take a break of at least half an hour and try to take your blood pressure at the same time every day. In summary, it is more accurate to measure blood pressure in the morning before breakfast and before bedtime, and to measure blood pressure at a fixed time every day.