High blood pressure means high systolic blood pressure, and high low blood pressure means high diastolic blood pressure, both of which are more harmful, and there is no such thing as which is the highest, and both of which should be taken seriously. Clinically, systolic blood pressure ≥ 140mmHg and/or diastolic blood pressure ≥ 90mmHg is called hypertension, therefore, whether high systolic or diastolic blood pressure is a form of high blood pressure, both of which are harmful to the body, and need to actively control blood pressure, and there is no such thing as who is more harmful. Long-term elevated blood pressure can cause a series of diseases, such as cerebral hemorrhage, cerebral thrombosis, cerebral infarction and other cerebrovascular diseases, or cause heart failure, chronic renal failure, hypertensive encephalopathy and so on. Patients suffering from high blood pressure should take antihypertensive drugs regularly under the guidance of a doctor to keep the blood pressure under control and avoid complications.