Pulmonary arterial hypertension causing body edema may be due to long-term pulmonary arterial hypertension causing right heart failure and stagnation of the body circulation, which requires active treatment to improve the prognosis of the disease. If patients with pulmonary arterial hypertension do not control the disease in time, long-term pulmonary arterial hypertension will cause increased pressure in the right ventricle, thus causing right heart failure and stagnation of the circulation. Clinically, it will be manifested as edema of both lower limbs, jugular vein angstrom, abdominal effusion, pleural effusion and so on. Therefore, after the pulmonary arterial hypertension caused edema, we need to actively intervene in the treatment, you can take diuretics such as hydrochlorothiazide to reduce edema, in addition to identifying the cause of pulmonary arterial hypertension, to determine the type of pulmonary arterial hypertension can be based on the cause of the symptomatic treatment. Drugs need to be used in accordance with the doctor’s instructions, the emergence of adverse reactions to consult a doctor, drug allergy is prohibited.