Acute respiratory hemoptysis refers to life-threatening massive hemoptysis, and hemoptysis greater than 500 ml in 24 hours or 300 ml at a time is called hemoptysis, the incidence of which is 7% to 32%, and the patient often dies suddenly due to hemorrhagic shock or asphyxia. The patient often dies suddenly due to hemorrhagic shock or asphyxiation. Medical treatment of patients with hemoptysis is often effective, and surgical procedures are more invasive and have a high mortality rate. Treatment methods: Traditional methods include: 1, medical drugs to stop hemorrhage, intravenous drip hemostatic drugs and vasoconstrictors, which are effective for small amounts of coughing up blood, but often not effective for large amounts of hemoptysis. 2, surgery, total lung resection or lobectomy surgery is very traumatic, the timing of surgery is often difficult to choose, postoperative complications, high mortality. At present, minimally invasive interventional embolization has become the main treatment method for acute hemoptysis. Interventional method: A 2-mm puncture is made at the femoral artery on one side, and a 1.5-mm catheter is inserted at the level of the 4th to 6th thoracic vertebrae of the descending aorta to search for the bronchial artery and the corresponding intercostal artery for imaging, and the angiography machine can clearly show the ruptured intrapulmonary artery. A 1-mm fine microcatheter is used for super-selective cannulation to the arterial rupture, and an appropriate embolic agent is injected for precise embolization, which only embolizes the diseased vessel without damaging the normal vessels. After completion of embolization, angiography is repeated to check the effect of embolization. If there is no diseased vessel, the catheter can be removed to end the procedure. Advantages of interventional therapy: It can solve the acute hemoptysis that cannot be controlled by internal medicine, which has a high risk of surgical treatment and high mortality. Interventional embolization can precisely locate the bleeding artery in the lung, and the hemostatic effect is immediate. The whole operation is done in the artery, without incision, without obvious complications, with a wide range of treatment and 24 hours postoperative down time. Patients with hemoptysis are in critical condition and have a high mortality rate. The General Hospital has successfully intervened in dozens of cases of various arterial hemorrhages, including arterial hemorrhage of the upper gastrointestinal tract, hemoptysis of various causes, hemorrhage of traumatic spleen and kidney rupture, and hemorrhage of gynecological disease. Every year, we have received requests for help from patients referred to the General Hospital from outside hospitals, such as large cough and blood from silicosis, large cough and blood from bronchial dilatation, and large bleeding from cervical pregnancy, and we have received immediate results in stopping the bleeding. The successful application of this technique has provided a new, minimally invasive and efficacious treatment for patients with arterial hemorrhage in clinical practice. Typical case 1: Intermittent coughing up blood for 1 year, suddenly aggravated recently, coughing up blood three times in one day with bright red color, the first coughing up 200ml, the second 300ml, and the third 500ml, the symptomatic treatment in many hospitals in the city was ineffective, and interventional embolization was performed in our hospital, and the patient recovered well after the operation. After embolization of the left bronchial artery with patchy bleeding before the operation, the bleeding stopped at the ruptured artery after injection of embolic agent into the left bronchial artery.