Interventional Radiology is an emerging discipline developed in recent years, which is a kind of minimally invasive treatment using modern high-tech means. Its treatment methods and means are different from both “medicine and injection” in internal medicine and “open surgery” in surgery, but under the guidance of modern advanced imaging equipment such as high-definition X-ray fluoroscopy, special catheters (about 2 mm thick) are placed in the body to operate and uniquely treat lesions outside the body. Under the guidance of modern advanced imaging equipment such as high-definition X-ray fluoroscopy, special catheters (about 2 mm thick) are inserted into the body to operate and treat lesions in the body. Therefore, it has the characteristics of “less damage, quicker effect and better cure”, and is especially suitable for patients who are difficult to be treated by medical drugs (such as liver cancer, lumbar disc herniation, vascular stenosis, etc.), and cannot, should not or do not want to receive surgical treatment. At present, interventional therapy has become an important means of modern clinical treatment.