The principle of tumor interventional therapy: 1. Perfusion chemotherapy A slim catheter is inserted through the femoral artery puncture, and the catheter is super-selectively inserted into the tumor blood supply vessels under X-ray fluoroscopy, and then the chemotherapeutic drugs are directly perfused into the tumor lesion to ensure the high concentration of drugs in the lesion and increase the drug effect, while the concentration of drugs in other healthy parts of the body is reduced, thus greatly reducing the damage of chemotherapeutic drugs to patients. 2.Embolytic chemotherapy On the basis of perfusion chemotherapy, a mixture of super liquid iodine oil and chemotherapeutic drugs is injected through catheter to embolize the tumor blood supply vessels. On the other hand, the chemotherapeutic drugs mixed in the embolization agent are gathered in the lesion to achieve the purpose of long-term sustained release and killing of tumor cells.