Interventional radiology, also known as interventional therapy, is an emerging discipline that has rapidly developed in recent years, integrating diagnostic imaging and clinical treatment. Under the guidance and monitoring of digital subtraction angiography, CT, ultrasound and magnetic resonance imaging equipment, it is a series of techniques that use puncture needles, catheters and other interventional devices to introduce specific devices into the human body through natural orifices or tiny incisions for minimally invasive treatment. It has become one of the three pillars of clinical practice alongside traditional internal medicine and surgery. There are many interventional techniques, first of all, they can be divided into vascular and non-vascular interventional techniques. Coronary angiography, thrombolysis and stent placement for the treatment of angina pectoris and acute myocardial infarction are typical vascular interventional techniques, while percutaneous aspiration biopsy, radiofrequency ablation, argon helium knife and radioactive particle implantation for liver cancer, lung cancer and other tumors are non-vascular interventional techniques. According to the system to which the disease is treated, it can be divided into neurointervention, cardiovascular intervention, tumor intervention, obstetrics and gynecology intervention, skeletal muscle intervention, etc. Tumor diseases: including tumor blood supply artery embolization and drug perfusion, preoperative embolization of tumor vessels, tumor percutaneous puncture biopsy, radiofrequency ablation, cryoablation (argon helium knife), radioactive particle implantation, etc.