Iodized oil deposition after liver cancer intervention is a normal manifestation of the intervention. Liver intervention often requires puncture on the hepatic artery, then insert the catheter into the hepatic artery, and then inject the embolic agent into the hepatic artery to block the blood supply of the artery. The embolic agent itself is a kind of iodized oil, and after liver cancer intervention, iodized oil deposition may occur, which is a normal manifestation of the intervention and patients need not be nervous. Liver cancer cells have a strong affinity for iodine oil, and interventional therapy makes use of this feature to embolize the blood supply artery of the tumor and then achieve the purpose of shrinking the tumor. Generally speaking, iodine oil deposition is normal, patients do not need to worry too much and pay attention to observe their own physical condition. After interventional therapy for liver cancer, if patients have obvious discomfort, they should consult doctor in time.