Pulmonary hypertension refers to a hemodynamic and pathophysiological state in which pulmonary artery pressure is elevated above a certain threshold, which can lead to right heart failure and can be an independent disease, a complication, or a syndrome. Symptoms are non-specific and can be asymptomatic in the early stages, but may manifest as follows as the disease progresses: 1. Dyspnea: It appears earliest and is the most common. It is manifested as shortness of breath after progressive activity, and can also occur at rest in severe cases. Fatigue, weakness, and reduced exercise tolerance: associated with reduced cardiac output and inadequate tissue perfusion. 3, syncope: Decreased cardiac output leads to insufficient blood supply to brain tissue. 4, angina pectoris or chest pain: due to right heart ischemia, associated with reduced coronary perfusion due to right ventricular hypertrophy and insufficient relative blood supply to the myocardium. 5, hemoptysis: caused by rupture of pulmonary precapillary microangioma. 6, hoarseness: caused by pulmonary artery dilatation compressing the recurrent laryngeal nerve. 7, symptoms of right heart failure: lack of appetite, nausea, vomiting, epigastric distension, bilateral lower limbs, perineum, lumbosacral edema, thoraco-abdominal fluid, cyanosis of the lips, fingertips and ears, neurological symptoms, etc. 8, some types of pulmonary hypertension will also have symptoms of the primary disease: for example, connective tissue disease-related pulmonary hypertension may have hair loss, photosensitivity, oral ulcers, arthritis, etc. Pulmonary arterial hypertension is a common and frequent disease, and the disability and death rates are very high, so it should be paid great attention to people.