There is a certain relationship between blood pressure and weather. Weather changes will cause blood pressure instability due to cold and heat stimulation, especially capillary constriction or diastole, which will lead to an increase in blood pressure when patients have vasoconstriction, so blood pressure is directly related to weather and temperature. For example, if a patient is in an alpine area for a long time, the patient will have excessive capillary constriction, and the patient will have different degrees of hypertension. In addition, if the patient is in a hot area with high temperature for a long time, it will also lead to vasodilation and low blood pressure. Therefore, high or low blood pressure is related to the weather and temperature, but it is not a direct factor that causes blood pressure to increase or decrease.