Pulmonary artery hypertension is a relatively common disease in daily life. Based on the different pulmonary artery pressures, it can be divided into mild, moderate, and severe pulmonary artery hypertension. When the right heart catheter measures pulmonary artery pressure between 30 to 50 mmHg, this situation often belongs to mild pulmonary artery hypertension. So, what should one do if diagnosed with mild pulmonary artery hypertension? Generally, mild pulmonary artery hypertension is not serious and usually does not cause noticeable symptoms, so no special treatment is needed. However, having mild pulmonary artery hypertension does not mean it can be taken lightly. It is important to undergo regular examinations under the guidance of a doctor, identify the cause of the increased pulmonary artery pressure, and treat the symptoms timely.