Hemoptysis is a common clinical symptom that refers to bleeding from the trachea, bronchi and lung parenchyma, with blood being coughing out of the mouth. Any hemoptysis with blood in the sputum or simply fresh blood is called hemoptysis. There are many causes of hemoptysis, most of which are respiratory diseases, such as bronchiectasis, lung cancer or tuberculosis. In our clinical work, we often find that some patients with hemoptysis are slightly better after drug treatment, but will hemoptysis again within a few days after stopping the drug, making the patients and their families suffer. If the lesion is limited, it can be surgically removed, but if the lesion is widespread, such as tuberculosis, the patient is older or has poor lung function, etc., then surgical treatment is not possible, and some hospitals are often helpless. In fact, there is no need to worry, at this time, interventional therapy can bring new hope to patients. First of all, there are two sets of blood vessels in the human lungs: the pulmonary artery and the bronchial artery. The pulmonary artery is a functional pulmonary vessel involved in gas exchange, while the bronchial artery is a vessel involved in nutrient supply. In most patients with hemoptysis, the bleeding vessel comes from the bronchial artery, so if we can block the bronchial artery, we can basically solve the hemoptysis, and this is the theoretical basis of interventional treatment of hemoptysis. So, the interventional treatment for hemoptysis is: bronchial artery embolization (of course, there may be other ectopic bronchial arteries or intercostal arteries supplying blood when it comes to specific lesions). So how does the interventionalist do it? In fact, it is relatively simple, just need to puncture a rice-sized opening in the leg with a needle, then send a catheter near the thoracic aorta, look for the bleeding bronchial artery, find it and plug the vessel with a special material. Generally, hemostasis is immediate, and many patients stop hemoptysis immediately after the bleeding vessel is plugged! And as a minimally invasive procedure, bronchial artery embolization does not cause any serious trauma and only requires lying down for 12 hours after surgery!