Under the guidance of medical imaging and diagnostic equipment, puncture needles, catheters and other interventional devices are used to treat the disease or to collect histological, bacteriological and physiological and biochemical data for diagnosis. Second, the advantages of interventional therapy 1, minimally invasive, small trauma, no surgical scar 2, repeatability 3, accurate positioning 4, fast results, short recovery time 5, safety, does not destroy the original anatomical structure 6, fewer complications Third, the interventional treatment of various tumors (perfusion, chemotherapy, embolization, particle placement, etc.) For tumors that can be surgically removed, preoperative interventional therapy can reduce intraoperative bleeding and tumor spread. For tumors that cannot be removed surgically, intravascular super-selective “targeted chemotherapy” and intravascular embolization can be performed to block their spread and allow tumor necrosis and shrinkage to achieve the purpose of interventional treatment. For tumors that are inoperable and insensitive to radiotherapy and chemotherapy, interventional therapy is preferred. Such as liver cancer, kidney cancer, etc. IV. Interventional treatment of cardiovascular diseases including cardiac lesions, valve stenosis, atrial septal defect and unclosed arterial catheter, coronary stenosis or acute thrombosis causing myocardial infarction, heart rate arrhythmia, etc. V. Head and neck interventions Cerebral angiography, intracranial vascular lesions such as cerebrovascular malformation, aneurysm, carotid cavernous sinus fistula embolization, etc. have been carried out. In addition, we have carried out emergency embolization of nasopharyngeal hemorrhage, preoperative embolization of nasopharyngeal hemangioma, chemoembolization of malignant tumors, embolization of vascular malformation or hemangioma in the neck, etc. Interventional treatment of peripheral vascular lesions Various causes of vascular stenosis and obstruction (thrombosis), atherosclerotic plaque stenosis, aneurysm and arteriovenous malformation, femoral head necrosis, etc. Seven, various luminal stenosis expansion, stent placement such as esophageal stents, intestinal stents, arteriovenous stents, urethral stents, etc. Interventional treatment of hemorrhagic diseases arterial or venous gastrointestinal hemorrhage, hemoptysis caused by various reasons, hemorrhage of liver, spleen and kidney caused by various reasons, postpartum and tumor hemorrhage, hemorrhage of bladder and urethra, etc.