The exact duration of survival for patients with pulmonary hypertension is related to the availability of effective treatment, the severity of pulmonary hypertension and the rate of progression, and cannot be generalized. Pulmonary hypertension is defined as an average pressure in the pulmonary arteries higher than 25 mmHg and can be caused by congenital factors, such as an unclosed ductus arteriosus, or by acquired factors, such as pulmonary embolism and emphysema. If severe pulmonary hypertension occurs suddenly and cannot be treated effectively in time, the patient is likely to die of the disease at any time. If a patient develops mild pulmonary hypertension and the disease progresses at a slower rate, such as chronic obstructive pulmonary heart disease, life expectancy is usually not affected after treatment under the guidance of a cardiologist or respiratory physician. Therefore, when pulmonary hypertension is detected, it is important to visit a cardiology clinic in a timely manner to find out the factors causing pulmonary hypertension and to treat the cause as early as possible.