The longer the contact time between chemotherapeutic drugs and tumor cells, the better the anti-cancer effect of chemotherapeutic drugs. Inserting the interventional catheter selectively into the tumor artery and infusing large doses of chemotherapeutic drugs into the impact treatment at one time, thus exponentially increasing the local drug concentration of tumor and improving the anti-cancer effect of drugs. It can eliminate the tiny metastases and subclinical foci around the cancer foci and make the surgical resection more complete; at the same time, the drug can be administered before the blood vessels and lymphatic vessels at all levels of the tumor are damaged to increase the concentration of local chemotherapeutic drugs in the tumor and achieve the effect of efficient killing of cancer cells; it can also shrink the tumor foci and reduce the complications of surgery, or enable the patients in the middle and late stages who have lost the opportunity of surgery to obtain the opportunity of surgery and create conditions for subsequent treatment.