Malignant tumor is the first tumor with the highest mortality rate. According to statistics, 7 million people died from malignant tumor worldwide in 2000. The comprehensive treatment of malignant tumors includes surgery, chemotherapy, radiotherapy, interventional therapy, biological therapy and traditional Chinese medicine. At this stage, malignant tumors are still incurable. With the continuous development of medical technology, the quality of life and survival time of malignant tumor patients have been improved. Interventional therapy is the most typical representative among them. Interventional therapy is to cut a small incision of 1-2 meters in the skin of the thigh root, puncture the femoral artery, and send the catheter to the nutritional vessels of the tumor under the guidance of medical imaging equipment using catheter guidewire technology to infuse chemotherapy drugs directly into the tumor to kill the tumor cells and embolize the nutritional vessels of the tumor to cut off the nutritional supply of the tumor. The tumor cells are “starved” to death. This is often referred to as percutaneous arterial chemoembolization. Arterial chemotherapy can directly infuse chemotherapeutic drugs into the tumor and increase the local concentration of chemotherapeutic drugs. Studies have shown that the local concentration of drugs in the tumor is 2-6 times higher when arterial infusion is given than intravenous infusion, and a 1-fold increase in local drug concentration can increase the amount of tumor cells killed by more than 10 times, and the systemic drug concentration is reduced and side effects are reduced. Arterial chemoembolization is not only the first choice treatment for liver cancer and liver metastasis cancer, but also has good effect on lung cancer, pancreatic cancer, kidney cancer, bladder cancer, prostate cancer, ovarian cancer, cervical cancer, breast cancer, esophageal cancer and head and neck malignancies. Interventional therapy includes not only vascular interventions but also non-vascular interventions. Radiofrequency ablation is an effective means of treating malignant tumors that has been developed in recent years. Radiofrequency ablation is to use electronic generator to generate medium-high frequency radiofrequency wave and convert radiofrequency wave into heat energy to make local temperature of tumor reach 90℃–120℃, thus causing local cancer cells to undergo thermal denaturation and coagulation necrosis. For tumors as small as 5cm can be completely destroyed to achieve the role of alternative to surgical operation. Radiofrequency ablation is gaining more and more attention from experts at home and abroad because of its advantages of less trauma, less pain, exact efficacy, high safety, less complications and faster recovery. The treatment field has developed from the initial liver cancer to kidney, adrenal, lung, bone, thyroid, breast and other tumors. Malignant stenosis of esophagus, trachea, bile duct and intestinal duct caused by some advanced malignant tumors seriously endangers patients’ lives. Choosing metal endoprosthesis implantation not only improves patients’ quality of life and prolongs life, but also provides opportunities for follow-up treatment of tumor patients. At present, interventional therapy plays an increasing role in the comprehensive treatment of malignant tumors.