Interventional therapy for liver cancer refers to a regional local chemotherapy by injecting anticancer drugs or embolic agents into hepatic artery through femoral artery cannula. At present, it is the first choice for non-open surgery to treat liver cancer. Interventional treatment of liver cancer is simple, safe and reliable, and can also be performed by the elderly, the weak and those with certain diseases, so it is very popular. Before interventional therapy, several preparations should be made normally: preoperative evaluation includes understanding the location, number and size of lesions in patients with liver cancer, and it is recommended to check PET-CT normally, which can provide a very comprehensive analysis of lesions. In addition, the patient's physical condition is also one of the main contents of evaluation, such as coagulation function, cardiopulmonary function, liver and kidney function, etc. Psychological nursing includes explaining the purpose, curative effect, routine operation methods, steps and preoperative preparation items of the operation to patients and their families. Make patients and their families know something and be psychologically prepared. Can cooperate with clinical treatment to achieve better therapeutic effect. Preoperative preparation includes iodine allergy test. Inject 1mL of Renren 3 compound meglumine diatrizoate through Shenmai, and observe whether the patient has allergic reactions such as dizziness, nausea, vomiting, palpitation and measles within 15-2 minutes. Before the operation, the pudendal skin should be prepared. Fasting water for 4 hours before operation, and emptying urine and urine as much as possible. (Is the interventional therapy for liver cancer effective? )