Blockage of blood vessels in the lungs is a more serious disease. Blockage of blood vessels in the lungs is acute pulmonary embolism. Acute pulmonary embolism is caused by the dislodgement of a blood clot or the embolization of a pulmonary vessel by air, tumor, fat, amniotic fluid, or other material. When this embolism occurs in the main blood vessels of the lung, it often causes serious consequences, such as patients will have sudden respiratory distress, blood pressure drop, fainting, and in serious cases, it may lead to sudden death. Therefore, blockage of blood vessels in the lung must be taken seriously, and if similar symptoms appear, early treatment must be carried out in hospital. Pulmonary vascular blockage has good results in some patients if treated actively and as early as possible. Pulmonary vascular blockage is a clinically critical condition, and once it occurs, patients need to be seen in a hospital in a timely manner. When the patient arrives at the hospital, the emergency physician may take an interventional approach to fragment and dissolve the embolus so that the blood vessel can be unblocked and the patient can be treated effectively, thus saving his or her life.