A patient with a diastolic blood pressure of 65 mmHg and a systolic blood pressure of 90 mmHg is hypotensive and has an abnormal blood pressure. According to the current, the most widely used that the normal range of hypertension should be systolic blood pressure less than 120mmHg, diastolic blood pressure should be less than 80mmHg, but there are specific range requirements, such as the requirement of the normal range of systolic blood pressure should be in the range of 100-120mmHg, diastolic blood pressure should be 60-80mmHg. if the elderly patients, it is best to control the diastolic blood pressure above 65mmHg and below 80mmHg, the most desirable. If it is an elderly patient, it is best to control the diastolic blood pressure above 65mmHg and below 80mmHg. If the patient’s blood pressure is low systolic blood pressure, the first thing to do is to find out what the cause of this situation is, and treat the primary disease, which will help to prevent the progression of the disease.