The main factors affecting diastolic blood pressure in physiologic states are peripheral resistance and heart rate. 1. Diastolic pressure is the pressure generated by the elastic retraction of the arterial vessels when the human heart is in diastole. When the peripheral resistance of the human body increases, the flow of blood from the aorta to the peripheral vessels slows down compared with the normal speed, and the blood retained in the aorta increases, leading to an increase in diastolic pressure. 2. When the heart rate increases, the diastolic time of the heart is shorter than normal and the blood flow to the periphery decreases, resulting in an increase in the amount of blood remaining in the aorta at the end of diastole, which leads to an increase in diastolic blood pressure. When the heart rate slows down or the peripheral resistance decreases, this results in a lower than normal diastolic blood pressure. If the diastolic blood pressure is abnormal, it is recommended to go to the hospital in a timely manner, under the guidance of a physician for treatment, and do not take oral medication on your own, so as to avoid delaying the condition and causing adverse consequences.