55-year-old blood pressure 150-98mmHg is not serious if there are no obvious risk factors, and the severity increases significantly in patients with multiple risk factors. Normal blood pressure ranges from 90 to 139 mmHg systolic and 60 to 89 mmHg diastolic, while grade 1 hypertension ranges from 140 to 159 mmHg systolic and 90 to 99 mmHg diastolic. a 55 year old with a blood pressure of 150-98 mmHg falls into the category of grade 1 hypertension. If the patient does not have other risk factors as well as medical history, such as age greater than 55 for men and 65 for women, smoking, impaired glucose tolerance, dyslipidemia, family history of early-onset cardiovascular disease, abdominal obesity, etc., it is a low-risk and generally not serious. However, they also need to be treated with lifestyle interventions or combined oral medications to lower blood pressure. If grade 1 hypertension is combined with one or two other risk factors, it is intermediate risk. If it is combined with three or more other risk factors or target organ damage, it is considered high risk. It is very high risk if there are clinical comorbidities or diabetes mellitus. In severe cases, hypertension can be complicated by cerebrovascular disease, aortic coarctation, hypertensive heart disease, heart failure, etc., which affects the patient’s life and health. Hypertension is a controllable but not curable disease. When abnormal blood pressure is detected, it is necessary to consult a doctor in a timely manner, and according to one’s own actual situation, carry out lifestyle interventions or medication under the guidance of the doctor.