The blood pressure peaks in 1 day are between 6-10 am, and 3-5 pm. Human blood pressure fluctuates in a spoon curve, with a double peak and a valley, with the double peak meaning that there are 2 peaks during the day. The 1st peak occurs between 6-10 am. The process of blood pressure rise occurs due to the full activation of various hormone secretion as well as metabolism in the body from sleep to wakefulness and the start of activity, which is often clinically referred to as the morning peak phenomenon. Clinical studies have confirmed that cardiovascular events such as sudden cardiac death, myocardial infarction, and unstable angina are likely to occur in the early morning. In addition, around 3-5 pm , a blood pressure peak will occur again. Subsequently, due to vagal excitation, blood pressure levels begin to gradually decrease, showing a more stable state during the night. An average blood pressure of less than 135/85 mmHg during the day and less than 120/70 mmHg at night is considered normal blood pressure. Patients with hypertension need to pay attention to the observation and grasp of blood pressure patterns, and the correct understanding of hypertension level 1 guidance on the use of drugs, stable control of blood pressure.