Interventional radiology is a discipline that integrates simple diagnostic radiology techniques and catheterization techniques guided by imaging methods, which opens up new avenues for diagnosis and treatment of diseases, with many advantages such as easy and safe operation, rapid and effective, less damage, fewer comorbidities and faster recovery, showing a broad prospect, especially for some diseases that were previously considered incurable or difficult to treat. It has won widespread attention and application in the medical field at home and abroad, and is well received by patients. Generally speaking, interventional therapy has the following advantages: a. Small trauma and safety Interventional surgery only requires local anesthesia, such as chemoembolization for liver cancer, which only requires local anesthesia at the root of the thigh, a local skin incision of about 2 mm, insertion of a very thin catheter, insertion of drugs in the blood vessel to the liver, local injection of drugs, extraction of the catheter after the end, local bandaging, very little trauma, and the patient is awake during the whole treatment. The doctor can finish the operation while communicating with the patient. Second, the effect is good, the efficacy is exact The effect of interventional treatment is obvious, and the advantage of treatment effect is immediate. For example, in the treatment of bleeding embolization, the bleeding of the patient can be stopped immediately after the operation, and the situation of the patient’s blood pressure dropping before the operation can be corrected immediately. For example, in the treatment of esophageal stricture, the patient can drink water immediately after the operation, and the feeling of obstruction to eating can be corrected immediately. For example, the interventional embolization treatment of hepatic hemangioma and uterine fibroid can be cured in one time, and the trauma is very small, and the tumor can be treated without an operation. The patient does not have to stay in bed for many days and reduce the time of urination and defecation in bed, thus reducing a lot of inconvenience to patients and their families. The development of interventional therapy has solved many clinical problems, making it possible to treat diseases that were previously inoperable or very difficult to operate on in a simple and effective way. For example, carotid cavernous sinus fistula requires craniotomy before interventional application, which is very traumatic and difficult to operate, but interventional treatment can be given in a very simple way, using balloon embolization with minimal trauma and immediate effect. For example, cholangiocarcinoma often causes obstructive jaundice in clinical practice, and the scope of surgical resection is often very large or inoperable because of the extensive invasion, but interventional treatment can be given by simple percutaneous transhepatic puncture, placing drainage tubes or bile duct stents, and further treatment on this basis, such as implantation of 125I radioactive particles, can be given effective treatment. When liver cancer patients reach advanced stage, they cannot undergo surgery because of their poor physical condition, and other treatments are not effective, but interventional treatment can have good effect, reduce clinical symptoms and prolong survival time.