Blood pressure 120mmHg～180mmHg without symptoms may be high blood pressure at the early stage or patients with high blood pressure tolerance value is elevated, it is recommended to consult a doctor in time to clarify. Blood pressure includes systolic and diastolic blood pressure, systolic blood pressure is high pressure, the blood pressure generated by peripheral arteries when the heart contraction, the normal value of 90 to 140mmHg. diastolic blood pressure is low pressure, the blood pressure generated by peripheral arteries when the heart diastole, the normal value of 60 to 90mmHg. Blood pressure higher than 140mmHg, both systolic and diastolic pressure, are high blood pressure, is not normal. If the patient’s blood pressure is higher than 140mmHg and there are no symptoms, it may be due to the initial stage of hypertension, where the initial symptoms are usually not easily noticed, or the patient’s hypertension tolerance value is elevated and there are no symptoms. When the blood pressure is not within the normal range, attention should be paid to it, and prompt medical attention should be sought.