At present hypotension is diagnosed if it is below 90/60 mmHg. If hypotension is caused by genetic or physical factors such as low blood pressure, in this case there is no effect on a person’s life expectancy through follow-up observation. If the hypotension is caused by serious pathological factors, such as severe trauma leading to hemorrhagic shock or severe heart failure, the low blood pressure will require specific treatment to assist in raising the blood pressure according to the specific disease. However, if a patient with hypotension has postural hypotension, such as sudden dizziness or fainting when moving from a sitting to an upright position, the cause of postural hypotension needs to be clarified. In general, postural hypotension is mostly associated with autonomic dysfunction and other causes. In this case, patients can further clarify the causes, such as whether there are arterial developmental malformations or heart valve problems.