Low blood pressure (diastolic blood pressure) below 50mmHg can be treated with controlled diet, exercise and medication. Generally, blood pressure below 90mmHg/60mmHg is diagnosed as hypotension. It is analyzed according to the presence or absence of symptoms and age. 1. Asymptomatic young people: the usual diastolic blood pressure is about 50mmHg, without any related symptoms, and the quality of life is better, this kind of people do not need to carry out special interventions, controlling the diet and regular exercise. 2. Asymptomatic elderly: blood pressure is high systolic pressure, low diastolic pressure, if the systolic blood pressure is above 140mmHg, diastolic blood pressure is 50mmHg, it is called simple systolic hypertension, when choosing antihypertensive drugs, you should choose the drugs that have little effect on diastolic blood pressure and mainly lower systolic blood pressure, such as calcium antagonist: nifedipine, amlodipine, etc., diuretics: furosemide, torasemide, hydrochlorothiazide, etc.. 3. Symptoms: If the diastolic blood pressure is 50mmHg, causing dizziness, chest tightness and shortness of breath, angina pectoris or myocardial ischemic attack, then you can consider reducing the use of antihypertensive drugs under the guidance of the doctor, so that the patient’s low blood pressure can be slightly increased. If there is any discomfort, consult a doctor in time and follow the doctor’s instructions for treatment.