Interventional radiology is an emerging discipline that uses minimally invasive techniques to diagnose and treat diseases under the guidance of imaging equipment. Based on medical imaging, it integrates surgical techniques and medical therapies to form minimally invasive interventional techniques, and together with medicine and surgery, it forms one of the three major clinical medical treatment systems. Interventional radiology is divided into vascular interventional medicine and non-vascular interventional medicine according to technology; from the clinical scope, it is divided into tumor interventional medicine and non-tumor interventional medicine, cardiac and macrovascular interventional medicine and neurointerventional medicine, among which tumor interventional medicine is the most researched, the earliest, the richest and the fastest developing important part. Zhang Feng, Oncology Center of Shandong Chest Hospital Interventional diagnosis and treatment has the following features: 1. Minimally invasive: (1) Tumor tissues can be obtained through percutaneous puncture for cytological and pathological diagnosis, and various ablation treatments can be performed. (2) Catheter or stent can be delivered into blood vessels, bile duct, esophagus and genitourinary tract through physiological lumen to complete the opening treatment of vascular stenosis or lumen stenosis caused by tumor. (3) Through vascular puncture, selective or super-selective vascular cannulation of the whole body organs can be performed to complete the diagnosis and treatment of various tumors or tumor-related diseases. (2) Accurate positioning and clear therapeutic effect: Since all operations are performed under the precise guidance of medical imaging equipment, the interventional instruments or drug injection catheters can accurately reach the tumor site for specific diagnosis and treatment. 3. Good repeatability: The biological characteristics of tumors determine that the treatment of malignant tumors often requires repeated treatment or multidisciplinary comprehensive treatment. Interventional treatment, because of its minimally invasive nature, small side effects and few complications, treats tumor tissues for many times or in multiple ways. 4. Less side effects and complications: Since interventional therapy is a minimally invasive treatment guided by imaging equipment and mainly local treatment, the incidence of complications and the impact on the whole body are usually lower than those of medical treatment and surgical treatment, whether it is carotid artery perfusion or embolization treatment, ablation treatment or lumen opening treatment.