How long can severe pulmonary hypertension live cannot be generalized, and the exact time varies from person to person. Usually, if patients with severe pulmonary hypertension are not treated, their survival time will be relatively short, ranging from a few days or months to about 3 years; if they are actively treated, their survival time will be extended, which may be several years or about 10 years, with some individual differences in the specific time. Severe pulmonary hypertension can lead to right heart ischemia, right heart failure, angina, chest pain, nausea, vomiting and other symptoms, and in severe cases, syncope, which can even be life-threatening if not treated actively. Different people have different pressures due to severe pulmonary hypertension, which causes different damage to the body and the survival time will be different. The overall survival time without active treatment is relatively short, so treatment should be actively carried out after severe pulmonary hypertension is detected. After the doctor assesses the patient’s condition, treatment with anticoagulant drugs, diuretic drugs, cardiotonic drugs, and targeted drugs can improve the prognosis and prolong life expectancy. The exact survival time after treatment is related to the repair of the individual’s body.