Interventional treatment of tumor is a new minimally invasive treatment method, which has only less than 30 years of history in China. Although it is not long, it is soon recognized by the medical profession and has been widely carried out because of its advantages of small trauma and good efficacy. Interventional treatment has the guidance of imaging equipment, accurate positioning, small damage, fast recovery, good results, low complication rate; compared with surgery, systemic chemotherapy, postoperative complications are relatively few, light interference with the body is not great, to the maximum extent to protect the normal organs. Less toxic side effects, for malignant tumors that have no curative methods or cannot be operated, interventional therapy can confine the high concentration of drugs to the lesion as much as possible, with little toxic side effects to the whole body, so that most of the patients can receive the treatment. Interventional treatment of tumor is divided into two types: vascular interventional treatment and non-vascular interventional treatment. Vascular interventional therapy mainly targets the blood supply artery of tumor, i.e. inserting catheter into the blood supply artery of tumor and injecting anti-cancer drugs into the tumor area to kill cancer directly; or embolizing the blood supply artery of tumor to block the nutrient supply of tumor and reduce the size of tumor; or performing dual interventional therapy, in which anti-cancer drugs and embolic agents are combined together and injected into the target artery to block the blood supply and at the same time, the drugs stay in the tumor area to play the role of local chemotherapy to kill tumor. It can block the blood supply and at the same time, the drug stays in the tumor area to kill the tumor tissue. For example, lung cancer, liver cancer, liver metastasis cancer, stomach cancer, kidney cancer, colon cancer, pancreatic and duodenal tumors, cervical cancer, ovarian cancer, bladder cancer, limb tumors, etc. Non-vascular interventional treatment is to diagnose and treat tumor organs with various instruments under the guidance of medical imaging devices such as X-ray, CT, B-ultrasound. Firstly, percutaneous puncture is used to biopsy the tumor for clear diagnosis or treatment, and intra-tumor drug injection, radiofrequency ablation or radioactive particle implantation are commonly used for the purpose of direct tumor killing. The treatment of esophageal stenting can eliminate the difficulty of eating and restore normal diet. It is commonly used for percutaneous biopsy of solid tumors, intra-tumor drug injection, radiofrequency ablation or radioactive particle implantation for lung cancer, liver cancer, kidney cancer, liver metastasis cancer, intraesophageal stent placement for esophageal cancer and bile duct stent placement for bile duct cancer, as well as stent placement for tracheal cancer and colorectal cancer.