Severe pulmonary hypertension actually refers to increased pulmonary artery pressure caused by various reasons, and the increased pulmonary artery pressure, some severe is very serious, if long-term suffering from pulmonary hypertension, can cause heart lesions, causing pulmonary heart disease, and so far there is no good way to pulmonary heart disease, to the extent of pulmonary heart disease is already advanced, can only be symptomatic treatment, so it is necessary to clarify what causes Pulmonary hypertension is called idiopathic pulmonary hypertension if the cause cannot be found, and secondary pulmonary hypertension if the cause can be found. In case of secondary pulmonary hypertension, the patient’s primary disease should be treated. In addition to medication to lower pulmonary artery pressure, diet can also be taken care of. If it is idiopathic pulmonary hypertension, there are five categories of drugs, and these drugs should be selected according to the situation, so the first and most important issue is to clarify whether there are secondary factors of pulmonary hypertension, such as some long-term patients with chronic chronic obstructive pulmonary disease, long-term lung disease can cause pulmonary hypertension, such as some pulmonary vascular disease pulmonary embolism, long-term can also cause Pulmonary hypertension, so we should treat his primary disease.