Mild pulmonary hypertension is generally not serious. Pulmonary arterial hypertension is a hemodynamic and pathophysiological state, refers to the resting state, the right heart catheterization of the average pulmonary artery pressure is relatively high ≥ 25mmHg, and pulmonary arterial hypertension mild, generally in 26 ~ 35mmHg, generally does not cause obvious discomfort symptoms, the body is not much impact. When there is a mild degree of pulmonary hypertension, we should pay attention to dynamic observation of physical changes, and should be every six months to the hospital to review the cardiac ultrasound, if the condition has not further progressed, generally do not need to take special treatment. If the disease progresses or the patient causes clinical symptoms, such as chest tightness, dyspnea, etc., need to actively cooperate with the doctor for treatment. However, it is necessary to pay attention to the primary disease, such as congenital heart disease, portal hypertension, interstitial lung disease, etc., for the treatment of the primary disease. When mild pulmonary hypertension occurs, it is important to follow the doctor’s instructions, go to the hospital regularly for review, and pay attention to observe the physical condition, and seek medical treatment in time once uncomfortable symptoms appear.