The basic technical methods of interventional therapy: 1, percutaneous puncture method: the basis of all techniques of interventional radiology, pioneered by Dr. Sven-Ivar Seldinger in Sweden in 1953, the method of percutaneous femoral artery cannulation with trocar needles, guide wires and catheters for angiography, laid the foundation for contemporary interventional radiology. All interventional procedures are performed through the Seldinger puncture method to establish surgical access. 2.Transcatheter vascular embolization (TAE) refers to the technique of injecting embolic agent into the target vessel through the catheter to occlude the target vessel and achieve the purpose of treatment. 3.Transcatheter drug infusion (TAI) refers to the technique of injecting drugs into the target vessel through the catheter to achieve the treatment purpose. 4.Percutaneous transluminal angioplasty (PTA) is a technique to dilate or recanalize atherosclerotic or other causes of vascular stenosis or occlusive lesions via catheters and other devices. 5.Stenting (Stent) is the opening of stenoses and occlusions in human luminal tracts (blood vessels, trachea, bile duct, esophagus, intestinal tract and artificial shunts, etc.) by placing stents. In summary, all interventions are a combination of the above five techniques: 1) Vascular diseases: (1) PTA + Stent for vascular stenosis. For example, lower extremity atherosclerosis occlusive disease, renal artery stenosis, vertebral artery stenosis, subclavian artery stenosis, etc. (2) Thrombolysis (transcatheter thrombolytic drug infusion), such as acute intravascular thrombosis causing ischemia/ congestion in the corresponding region. (3) Application of embolic materials, steel rings, endoprostheses for aneurysms, AVMs, arteriovenous fistulas and vascular bleeding (gastrointestinal tract, head and neck), etc. (4) Application of puncture + PTA + Stent for the treatment of cirrhotic pulsed portal hypertensive bleeding (TIPS), Buga’s syndrome. (5) Inferior vena cava filter to prevent thrombus dislodgement in the lower extremities and abdominopelvic region. 2, tumor: (1) selective tumor supply artery perfusion chemotherapy + embolization for malignant tumors. Such as liver cancer, kidney cancer, lung cancer, etc. (2) Percutaneous puncture injection of anhydrous alcohol and other treatment of malignant tumors. (3) Application of embolization to treat cavernous hemangioma, trapezoid hemangioma, uterine leiomyoma, osteosarcoma, nasopharyngeal fibrovascular tumor, etc. (4) Ablation treatment of solid tumors such as liver cancer, lung cancer and kidney cancer. Including microwave, radiofrequency, cryo-argon helium, ultrasonic sea support, etc. (5) Radioactive iodine 125 particles (125I) implantation for solid tumors, such as liver cancer, lung cancer, metastases, etc. (3) Non-vascular diseases: (1) Application of PTA+Stent or simple PTA for stenosis of the digestive tract, urinary tract, biliary tract, airway, such as obstructive jaundice, esophageal stenosis, tracheal stenosis, etc. (2) Percutaneous puncture and fluid injection of sclerotherapy for liver cysts, kidney cysts, spleen cysts, etc. (4) Percutaneous puncture aspiration for liver abscess or abdominal abscess, etc. (4) Percutaneous puncture biopsy: application of special puncture needle biopsy gun to aspirate or take tissue for pathological examination. There are many kinds of interventional treatment and various forms, but the basic skills are similar. In general, the main five magic weapons of interventional treatment are: “instillation (drugs), blocking (bad blood vessels/luminal tracts), passing (good blood vessels/luminal tracts), elimination (tumors), and taking (tumor biopsies)”.