Common hemorrhages include hemoptysis, vomiting blood, blood in the stool, vaginal bleeding, etc. Such bleeding is often difficult to control with drugs, and surgery is often difficult to perform because the patient has gone into hemorrhagic shock or the cause of the bleeding is unknown. In such cases, interventional treatment is the best choice: first, angiography is performed to quickly and accurately identify the site of bleeding, and then embolization and blocking treatment is performed to target the bleeding vessels, which can immediately stop the bleeding and achieve the purpose of curing the disease and saving lives. For example, the mortality rate of hemoptysis is as high as 60% – 80%, and the rate of hemostasis is 96% by embolization of bronchial artery with interventional technology, which is a reliable and effective method to stop hemorrhage in emergency; for gastrointestinal hemorrhage, angiography can quickly clarify the site of hemorrhage, and the hemorrhage can be stopped by direct blocking treatment through interventional catheter; the condition of pelvic hemorrhage often deteriorates rapidly within a short time, and the death caused by hemorrhage is 69%. 69%, taking super-selective cannulation to directly embolize the bleeding artery can save lives.