For the treatment of malignant tumors, surgery is preferred, followed by chemotherapy or radiotherapy, and then adjuvant combination therapy. It is applicable to tumors without metastasis; radiotherapy or chemotherapy is applicable before and after surgery or when the chance of surgery is lost. The essence of traditional chemotherapy is intravenous chemotherapy, in which chemotherapeutic drugs are dissolved in a certain liquid (diluted about 100 to 500 times), enter into the vein through the infusion tube, flow back into the heart, and then mixed with the venous blood of the upper and lower chambers of the heart (diluted about 500 to 1,000 times), and then spread all over the body through arteries, in which only part of the drugs that are diluted by a high degree of dilution enter into the tumor foci through the arteries of the tubes concerned to play their roles; with the features of It has the advantages of simple operation, low cost and can be carried out in hospitals of all levels, but also has the disadvantages of low concentration of drugs locally in the lesion, distribution of the same concentration of drugs in unrelated tissues and organs, and heavy systemic reaction. Regardless of the mode of chemotherapy, its purpose is to let the drug enter the lesion locally through its relevant arteries to play a role, the efficacy is proportional to the drug concentration, and the side effects are related to the distribution of the drug throughout the body of irrelevant tissues and organs. Localized precision chemotherapy has always been a clinically pursued dream. The development of interventional radiology has made this dream a reality. Interventional therapy (arterial infusion chemotherapy and embolization) is the application of puncture, intubation technology, under the guidance of large X-ray TV fluoroscopic contrast machine, the catheter is precisely and selectively inserted into the target artery for blood supply of the tumor lesion, and then after the high-definition computerized digital subtraction angiography (DSA), after analyzing and diagnosing the lesion’s location, quantity, and morphology, the catheter will be precisely and directly infused with the high-concentrated chemotherapy drugs into the lesion, which is highly lethal and effective. After analyzing and diagnosing the number and morphology of the lesions, the chemotherapeutic drugs are precisely and directly infused into the lesions through the catheter with high concentration, which has a strong killing power and high efficacy, while the distribution of the drugs around the lesions and the irrelevant tissues and organs of the whole body is small, and the systemic side effects are extremely low. After infusion, the tumor vascular bed is blocked with embolic agent to cut off the nutritional supply of the tumor and “starve to death” the tumor cells; the two-pronged attack of chemotherapeutic drugs and cutting off the logistic nutrient line effectively kills and destroys the tumor foci, and it is suitable for the treatment of the majority of malignant tumors in various periods and parts of the body.