Weight loss after interventional liver cancer surgery is abnormal, which may be due to the high consumptive nature of liver cancer itself or complications after interventional liver cancer surgery. 1. Liver cancer itself is a kind of high consumptive disease, and the large amount of nutrients taken up by cancer cells can lead to progressive weight loss of liver cancer patients. After intervention, liver cancer may still survive and continue to consume nutrients, thus causing weight loss. 2. Complications such as pain, fever, nausea, vomiting and so on may occur after interventional surgery for liver cancer, which may lead to decreased absorption of nutrients, decreased appetite and poor supplementation of nutrients, thus causing weight loss. The specific situation needs to consult the doctor and treat according to the cause after identifying the cause.