Low blood pressure, i.e. diastolic blood pressure, is considered high if it is measured on a non-same day, in a quiet state, with three consecutive low pressures of 91 mmHg or more. Specific analysis is as follows: 1. Adults with systolic blood pressure (high pressure) ≥140mmHg and/or diastolic blood pressure (low pressure) ≥90mmHg when measured 3 times in a row on non-same day, in a quiet state, are diagnosed as hypertensive. If the diastolic blood pressure (low blood pressure) is 91mmHg, the patient is already hypertensive, regardless of whether the systolic blood pressure is normal or not. 2. After diagnosis of hypertension, when the diastolic blood pressure (low pressure) reaches 91mmHg, it belongs to grade 1 hypertension (mild), and it can be prioritized to lower the blood pressure through diet, exercise, weight loss and other life adjustments. For example, diet should be light, low-salt, low-fat; daily to adhere to a moderate amount of aerobic exercise, such as jogging, swimming, etc.; if there are obese people should actively lose weight. Usually, after the above conditioning, blood pressure can be normalized, and life conditioning needs to be adhered to for a long time. 3. If the patient’s blood pressure fails to fall to normal after life conditioning, he should consult a doctor in time to comprehensively assess whether there are other risk factors such as high blood lipids, diabetes, etc., and take antihypertensive medication as prescribed by the doctor if necessary.