Pulmonary hypertension can be asymptomatic, or it can manifest itself in symptoms such as dyspnea, chest pain, dizziness and fainting, which require prompt medical attention. Symptoms of pulmonary hypertension are not specific. Early pulmonary hypertension is usually asymptomatic and only manifests as discomfort after strenuous activities; as the pressure in the pulmonary arteries rises, systemic symptoms may gradually appear. With the increase of pulmonary artery pressure, systemic symptoms may appear gradually. Late or severe pulmonary hypertension may be manifested as dyspnea, chest pain during activity and emotional excitement, dizziness and fainting due to decreased cardiac output, small amount of hemoptysis, and fatigue and weakness. At the same time, a few patients may show Raynaud’s phenomenon and hoarseness due to compression of the recurrent laryngeal nerve. It is recommended to go to the hospital in time to avoid delaying the condition when the above symptoms occur.