Stress can cause an increase in blood pressure, which fluctuates from time to time in a 24-hour spoon shape, i.e., high blood pressure during the day and low blood pressure at night. One of the more complex causes of hypertension is increased sympathetic tone, which causes spasmodic constriction of small arteries. The sympathetic nerve function in the body is enhanced during stress, which can cause a faster, stronger heartbeat and higher blood pressure due to constriction of small, microscopic arteries in the abdominal viscera and skin. As a normal protective mechanism of the human body, elevated blood pressure during stress can increase the body’s emergency response and can be quickly recovered when the stimulus is lifted. However, when long-term stress, anxiety, insomnia, etc. lead to a long-term increase in sympathetic nerve function, breaking the balance between sympathetic, vagal and other vegetative nerves, it can cause a persistent increase in blood pressure. Long-term elevated blood pressure causes atherosclerosis, decreased arterial wall compliance, and decreased kidney function, which in turn causes a vicious cycle of elevated blood pressure.