Low blood pressure is known as diastolic blood pressure, and high diastolic blood pressure may cause a fast heart rate. The heart is a very important organ in the human body and is responsible for the circulation of blood through all parts of the body. Some patients with high diastolic blood pressure have increased sympathetic excitability, which can lead to high diastolic blood pressure accompanied by a rapid heart rate, which can put a certain burden on the heart. Patients can choose beta-blockers, such as metoprolol, to control blood pressure and reduce heart rate at the same time. Adopt a good lifestyle, such as low-salt, low-fat diet, quit smoking and drinking, and eat more fresh fruits and vegetables rich in vitamins and other nutrients. Regular work and rest, do not stay up late, appropriate physical exercise. In addition, it is recommended that patients with high diastolic blood pressure and fast heart rate go to the hospital in time, do relevant examinations to clarify the cause of the disease, and then follow the doctor’s instructions for treatment, so as to avoid delaying the condition.