Diastolic blood pressure (low pressure) 48mmHg is more dangerous and can affect multiple systems such as the heart, brain and kidneys. Patients with diastolic blood pressure 48mmHg will lead to insufficient blood supply to the myocardium, which can induce the occurrence of malignant arrhythmia, and even threaten the patient’s life, leading to sudden cardiac death. When the blood pressure is significantly reduced, it may cause severe peripheral organ and tissue perfusion insufficiency, such as causing cerebral blood supply insufficiency and fainting, and causing renal perfusion insufficiency resulting in renal function damage. If diastolic blood pressure of 48mmHg occurs, it is necessary to go to a regular hospital as soon as possible, by the doctor according to the specific conditions, to formulate an individualized diagnosis and treatment plan, so as not to delay the condition.